Deal with other mentioning of "rope" term

Author: andrykonchin

src/main/java/org/truffleruby/core/CoreLibrary.java

@@ -499,7 +499,6 @@ public CoreLibrary(RubyContext context, RubyLanguage language) {
         defineModule(truffleModule, "ObjSpace");
         defineModule(truffleModule, "Coverage");
         defineModule(truffleModule, "Graal");
-        defineModule(truffleModule, "Ropes");
         truffleRegexpOperationsModule = defineModule(truffleModule, "RegexpOperations");
         truffleStringOperationsModule = defineModule(truffleModule, "StringOperations");
         truffleBootModule = defineModule(truffleModule, "Boot");

src/main/java/org/truffleruby/core/regexp/TruffleRegexpNodes.java

@@ -726,7 +726,7 @@ private RubyHash buildMatchInfoStatsHash(HashStoreLibrary hashStoreLibrary, Matc
             buildAndSetDistributionHash(
                     hashStoreLibrary,
                     ret,
-                    "rope_types",
+                    "string_types",
                     stats.tstringClassFrequencies,
                     Optional.of(className -> StringOperations.createUTF8String(getContext(), getLanguage(), className)),
                     Optional.of(count -> count.get()));