[PRISM] Enable passing tests for prism

spec/prism.mspec

@@ -5,7 +5,6 @@
 MSpec.register(:exclude, "Warning.[] returns default values for categories :deprecated and :experimental")
 
 ## Language
-MSpec.register(:exclude, "The defined? keyword when called with a method name in a void context warns about the void context when parsing it")
 MSpec.register(:exclude, "Hash literal expands an '**{}' or '**obj' element with the last key/value pair taking precedence")
 MSpec.register(:exclude, "Hash literal expands an '**{}' and warns when finding an additional duplicate key afterwards")
 MSpec.register(:exclude, "Hash literal merges multiple nested '**obj' in Hash literals")

test/.excludes-prism/TestParse.rb

@@ -27,6 +27,5 @@ exclude(:test_unexpected_eof, "unknown")
 exclude(:test_unexpected_token_after_numeric, "unknown")
 exclude(:test_unterminated_regexp_error, "unknown")
 exclude(:test_unused_variable, "missing warning")
-exclude(:test_void_expr_stmts_value, "missing warning")
 exclude(:test_void_value_in_rhs, "unknown")
 exclude(:test_words, "unknown")