Merge pull request #709 from byroot/stop-mark-locations

Stop using `rb_gc_mark_locations`

Author: byroot

ext/json/ext/parser/extconf.rb

@@ -3,7 +3,6 @@
 
 have_func("rb_enc_interned_str", "ruby.h") # RUBY_VERSION >= 3.0
 have_func("rb_hash_new_capa", "ruby.h") # RUBY_VERSION >= 3.2
-have_func("rb_gc_mark_locations", "ruby.h") # Missing on TruffleRuby
 have_func("rb_hash_bulk_insert", "ruby.h") # Missing on TruffleRuby
 have_func("rb_category_warn", "ruby.h") # Missing on TruffleRuby