devops: revert ability to skip architecture enforcement (#4667)

Author: aslushnikov

browser_patches/checkout_build_archive_upload.sh

@@ -151,9 +151,7 @@ else
   exit 1
 fi
 
-# Ability to skip arch checks since as of Dec 8, 2020 github self-hosted runner runs
-# under rosetta on Apple Silicon: https://github.com/actions/runner/issues/805
-if [[ (-z "${DO_NOT_ENFORCE_ARCH}") && ("$CURRENT_ARCH" != "$EXPECTED_ARCH") ]]; then
+if [[ "$CURRENT_ARCH" != "$EXPECTED_ARCH" ]]; then
   echo "ERROR: cannot build $BUILD_FLAVOR"
   echo "  -- expected arch: $EXPECTED_ARCH"
   echo "  --  current arch: $CURRENT_ARCH"