ZJIT: Remove tests passing on macOS from exclusions

Author: st0012

test/.excludes-zjit/ErrorHighlightTest.rb

@@ -1,2 +1,2 @@
 # Issue: https://github.com/Shopify/ruby/issues/646
-exclude(/test_/, 'Tests make ZJIT panic')
+exclude(/test_/, 'Tests make ZJIT panic on Ubuntu')

test/.excludes-zjit/TestBugReporter.rb

@@ -1,3 +1 @@
-exclude(:test_proc_args_pos_rest_block, 'Test crashes with ZJIT')
-exclude(:test_proc_args_rest_post_block, 'Test crashes with ZJIT')
 exclude(:test_binding_receiver, 'Test fails with ZJIT')