[cmd/mdatagen] Remove the module from this repo (#31614)

`cmd/mdatagen` was moved to `go.opentelemetry.io/collector/cmd/mdatagen`
and deprecated since 0.92.0

Author: dmitryax

.chloggen/delete-mdatagen.yaml

@@ -0,0 +1,22 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: breaking
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: cmd/mdatagen
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Delete deprecated cmd/mdatagen from this project. Use go.opentelemetry.io/collector/cmd/mdatagen instead.
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [30497]
+
+# If your change doesn't affect end users or the exported elements of any package,
+# you should instead start your pull request title with [chore] or use the "Skip Changelog" label.
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: [api, user]

.github/CODEOWNERS

@@ -17,7 +17,6 @@
 
 cmd/configschema/                                        @open-telemetry/collector-contrib-approvers @mx-psi @dmitryax
 cmd/githubgen/                                           @open-telemetry/collector-contrib-approvers @atoulme
-cmd/mdatagen/                                            @open-telemetry/collector-contrib-approvers @dmitryax
 cmd/opampsupervisor/                                     @open-telemetry/collector-contrib-approvers @evan-bradley @atoulme @tigrannajaryan
 cmd/otelcontribcol/                                      @open-telemetry/collector-contrib-approvers
 cmd/oteltestbedcol/                                      @open-telemetry/collector-contrib-approvers

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -20,8 +20,6 @@ body:
       # Start Collector components list
       - cmd/configschema
       - cmd/githubgen
-      - cmd/mdatagen
-      - cmd/mdatagen/internal/samplereceiver
       - cmd/opampsupervisor
       - cmd/otelcontribcol
       - cmd/oteltestbedcol

.github/ISSUE_TEMPLATE/feature_request.yaml

@@ -14,8 +14,6 @@ body:
       # Start Collector components list
       - cmd/configschema
       - cmd/githubgen
-      - cmd/mdatagen
-      - cmd/mdatagen/internal/samplereceiver
       - cmd/opampsupervisor
       - cmd/otelcontribcol
       - cmd/oteltestbedcol

.github/ISSUE_TEMPLATE/other.yaml

@@ -14,8 +14,6 @@ body:
       # Start Collector components list
       - cmd/configschema
       - cmd/githubgen
-      - cmd/mdatagen
-      - cmd/mdatagen/internal/samplereceiver
       - cmd/opampsupervisor
       - cmd/otelcontribcol
       - cmd/oteltestbedcol

Makefile

@@ -260,12 +260,6 @@ generate: install-tools
 	cd ./internal/tools && go install go.opentelemetry.io/collector/cmd/mdatagen
 	$(MAKE) for-all CMD="$(GOCMD) generate ./..."
 
-.PHONY: mdatagen-test
-mdatagen-test:
-	cd cmd/mdatagen && $(GOCMD) install .
-	cd cmd/mdatagen && $(GOCMD) generate ./...
-	cd cmd/mdatagen && $(GOCMD) test ./...
-
 .PHONY: githubgen-install
 githubgen-install:
 	cd cmd/githubgen && $(GOCMD) install .