diff --git a/mlir/lib/Target/SPIRV/Serialization/Serializer.cpp b/mlir/lib/Target/SPIRV/Serialization/Serializer.cpp
index 56c64f38fe29a..d258bfd852961 100644
--- a/mlir/lib/Target/SPIRV/Serialization/Serializer.cpp
+++ b/mlir/lib/Target/SPIRV/Serialization/Serializer.cpp
@@ -446,19 +446,6 @@ LogicalResult Serializer::processType(Location loc, Type type,
 LogicalResult
 Serializer::processTypeImpl(Location loc, Type type, uint32_t &typeID,
                             SetVector<StringRef> &serializationCtx) {
-
-  // Map unsigned integer types to singless integer types.
-  // This is needed otherwise the generated spirv assembly will contain
-  // twice a type declaration (like OpTypeInt 32 0) which is no permitted and
-  // such module fails validation. Indeed at MLIR level the two types are
-  // different and lookup in the cache below misses.
-  // Note: This conversion needs to happen here before the type is looked up in
-  // the cache.
-  if (type.isUnsignedInteger()) {
-    type = IntegerType::get(loc->getContext(), type.getIntOrFloatBitWidth(),
-                            IntegerType::SignednessSemantics::Signless);
-  }
-
   typeID = getTypeID(type);
   if (typeID)
     return success();
diff --git a/mlir/test/CMakeLists.txt b/mlir/test/CMakeLists.txt
index 89568e7766ae5..ac8b44f53aebf 100644
--- a/mlir/test/CMakeLists.txt
+++ b/mlir/test/CMakeLists.txt
@@ -68,7 +68,6 @@ endif()
 llvm_canonicalize_cmake_booleans(
   LLVM_BUILD_EXAMPLES
   LLVM_HAS_NVPTX_TARGET
-  LLVM_INCLUDE_SPIRV_TOOLS_TESTS
   MLIR_ENABLE_BINDINGS_PYTHON
   MLIR_ENABLE_CUDA_RUNNER
   MLIR_ENABLE_ROCM_CONVERSIONS
@@ -218,11 +217,6 @@ if(MLIR_ENABLE_BINDINGS_PYTHON)
   )
 endif()
 
-if (LLVM_INCLUDE_SPIRV_TOOLS_TESTS)
-  list(APPEND MLIR_TEST_DEPENDS spirv-as)
-  list(APPEND MLIR_TEST_DEPENDS spirv-val)
-endif()
-
 # This target can be used to just build the dependencies
 # for the check-mlir target without executing the tests.
 # This is useful for bots when splitting the build step
diff --git a/mlir/test/Target/SPIRV/constant.mlir b/mlir/test/Target/SPIRV/constant.mlir
index 50d9b09ee0042..8d4e53418b70f 100644
--- a/mlir/test/Target/SPIRV/constant.mlir
+++ b/mlir/test/Target/SPIRV/constant.mlir
@@ -1,7 +1,6 @@
 // RUN: mlir-translate --no-implicit-module --test-spirv-roundtrip %s | FileCheck %s
-// RUN: %if spirv-tools %{ mlir-translate -no-implicit-module -serialize-spirv %s | spirv-val %}
 
-spirv.module Logical Vulkan requires #spirv.vce<v1.3, [VulkanMemoryModel, Shader, Int64, Int16, Int8, Float64, Float16, CooperativeMatrixKHR], [SPV_KHR_vulkan_memory_model, SPV_KHR_cooperative_matrix]> {
+spirv.module Logical GLSL450 requires #spirv.vce<v1.0, [Shader], []> {
   // CHECK-LABEL: @bool_const
   spirv.func @bool_const() -> () "None" {
     // CHECK: spirv.Constant true
@@ -306,6 +305,4 @@ spirv.module Logical Vulkan requires #spirv.vce<v1.3, [VulkanMemoryModel, Shader
     %coop = spirv.Constant dense<4> : !spirv.coopmatrix<16x16xi8, Subgroup, MatrixAcc>
     spirv.ReturnValue %coop : !spirv.coopmatrix<16x16xi8, Subgroup, MatrixAcc>
   }
-
-  spirv.EntryPoint "GLCompute" @bool_const
 }
diff --git a/mlir/test/Target/SPIRV/lit.local.cfg b/mlir/test/Target/SPIRV/lit.local.cfg
deleted file mode 100644
index 167c454db5184..0000000000000
--- a/mlir/test/Target/SPIRV/lit.local.cfg
+++ /dev/null
@@ -1,7 +0,0 @@
-if not "SPIRV" in config.root.targets:
-    config.unsupported = True
-
-if config.spirv_tools_tests:
-    config.available_features.add("spirv-tools")
-    config.substitutions.append(("spirv-as", os.path.join(config.llvm_tools_dir, "spirv-as")))
-    config.substitutions.append(("spirv-val", os.path.join(config.llvm_tools_dir, "spirv-val")))
diff --git a/mlir/test/lit.cfg.py b/mlir/test/lit.cfg.py
index a6f1ac0d568f4..9b5cadd62befc 100644
--- a/mlir/test/lit.cfg.py
+++ b/mlir/test/lit.cfg.py
@@ -332,7 +332,6 @@ def find_real_python_interpreter():
 else:
     config.available_features.add("noasserts")
 
-config.targets = frozenset(config.targets_to_build.split())
 
 def have_host_jit_feature_support(feature_name):
     mlir_runner_exe = lit.util.which("mlir-runner", config.mlir_tools_dir)
diff --git a/mlir/test/lit.site.cfg.py.in b/mlir/test/lit.site.cfg.py.in
index 77f24e0f29b09..132aabe135940 100644
--- a/mlir/test/lit.site.cfg.py.in
+++ b/mlir/test/lit.site.cfg.py.in
@@ -5,8 +5,6 @@ import sys
 config.target_triple = "@LLVM_TARGET_TRIPLE@"
 config.llvm_src_root = "@LLVM_SOURCE_DIR@"
 config.llvm_tools_dir = lit_config.substitute("@LLVM_TOOLS_DIR@")
-config.spirv_tools_tests = @LLVM_INCLUDE_SPIRV_TOOLS_TESTS@
-config.targets_to_build = "@TARGETS_TO_BUILD@"
 config.llvm_shlib_ext = "@SHLIBEXT@"
 config.llvm_shlib_dir = lit_config.substitute(path(r"@SHLIBDIR@"))
 config.python_executable = "@Python3_EXECUTABLE@"
@@ -43,7 +41,7 @@ config.mlir_run_amx_tests = @MLIR_RUN_AMX_TESTS@
 config.mlir_run_arm_sve_tests = @MLIR_RUN_ARM_SVE_TESTS@
 # This is a workaround for the fact that LIT's:
 #   %if <cond>
-# requires <cond> to be in the set of available features.
+# requires <cond> to be in the set of available features. 
 # TODO: Update LIT's TestRunner so that this is not required.
 if config.mlir_run_arm_sve_tests:
     config.available_features.add("mlir_arm_sve_tests")
diff --git a/utils/bazel/llvm-project-overlay/mlir/test/BUILD.bazel b/utils/bazel/llvm-project-overlay/mlir/test/BUILD.bazel
index a439fdd50d21c..51731b1e8f745 100644
--- a/utils/bazel/llvm-project-overlay/mlir/test/BUILD.bazel
+++ b/utils/bazel/llvm-project-overlay/mlir/test/BUILD.bazel
@@ -37,7 +37,6 @@ expand_template(
         # All disabled, but required to substituted because they are not in quotes.
         "@LLVM_BUILD_EXAMPLES@": "0",
         "@LLVM_HAS_NVPTX_TARGET@": "0",
-        "@LLVM_INCLUDE_SPIRV_TOOLS_TESTS@": "0",
         "@MLIR_ENABLE_CUDA_RUNNER@": "0",
         "@MLIR_ENABLE_ROCM_CONVERSIONS@": "0",
         "@MLIR_ENABLE_ROCM_RUNNER@": "0",