Don't preEval here

preEval is run later in doEval immediately before executing. Doing
it here appears to have caused some issue in either the parse or
the set-up of the scoping used by the parsed result (see
jruby#8346). Removing these pre-parse preEval calls fixes
the issue.

Fixes jruby#8346.

core/src/main/java/org/jruby/embed/jsr223/JRubyCompiledScript.java

@@ -56,15 +56,13 @@ public class JRubyCompiledScript extends CompiledScript {
     JRubyCompiledScript(ScriptingContainer container, JRubyEngine engine, String script) throws RaiseException {
         this.container = container;
         this.engine = engine;
-        Utils.preEval(container, engine.getContext());
         unit = container.parse(script);
     }
 
     JRubyCompiledScript(ScriptingContainer container, JRubyEngine engine, Reader reader) throws RaiseException {
         this.container = container;
         this.engine = engine;
         String filename = System.getProperty(ScriptEngine.FILENAME);
-        Utils.preEval(container, engine.getContext());
         unit = container.parse(reader, filename, Utils.getLineNumber(engine.getContext()));
     }