CHECK_LEAKS is always enabled with 01459f1

.github/workflows/annocheck.yml

@@ -111,8 +111,6 @@ jobs:
 
       ### test-spec doesn't work: https://github.com/ruby/ruby/actions/runs/4340193212/jobs/7578505652
       # - run: make test-spec
-      #   env:
-      #     CHECK_LEAKS: true
 
       - run: make test-annocheck
 

.github/workflows/compilers.yml

@@ -278,8 +278,6 @@ jobs:
         if: ${{ matrix.entry.check }}
 
       - run: make test-spec
-        env:
-          CHECK_LEAKS: true
         if: ${{ matrix.entry.check }}
 
       - run: make test-annocheck

.github/workflows/spec_guards.yml

@@ -57,8 +57,6 @@ jobs:
 
       - run: ruby ../mspec/bin/mspec
         working-directory: spec/ruby
-        env:
-          CHECK_LEAKS: true
 
       - uses: ./.github/actions/slack
         with: