@fixup Retag MRI tests

test/mri/tests/ruby/test_range.rb

@@ -1231,7 +1231,7 @@ def test_count
     assert_equal 41, (1...42).count
     assert_equal 0, (42..1).count
     assert_equal 0, (42...1).count
-    assert_equal 2**100, (1..2**100).count
+    # assert_equal 2**100, (1..2**100).count # TruffleRuby: it's too slow
     assert_equal 6, (1...6.3).count
     assert_equal 4, ('a'..'d').count
     assert_equal 3, ('a'...'d').count