parse.y: Remove meaningless ifndef guards

Because the part of the code is already within `#ifndef RIPPER`.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61707 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

parse.y

@@ -5386,17 +5386,13 @@ yycompile0(VALUE arg)
     }
 
     parser_prepare(parser);
-#ifndef RIPPER
 #define RUBY_DTRACE_PARSE_HOOK(name) \
     if (RUBY_DTRACE_PARSE_##name##_ENABLED()) { \
 	RUBY_DTRACE_PARSE_##name(ruby_sourcefile, ruby_sourceline); \
     }
     RUBY_DTRACE_PARSE_HOOK(BEGIN);
-#endif
     n = yyparse((void*)parser);
-#ifndef RIPPER
     RUBY_DTRACE_PARSE_HOOK(END);
-#endif
     ruby_debug_lines = 0;
     ruby_coverage = 0;