Revert "ability to compile text and small refactoring"

This reverts commit 4ddf101397.

compiler/tests/org/jetbrains/jet/codegen/CodegenTestCase.java

@@ -223,4 +223,18 @@ public abstract class CodegenTestCase extends JetLiteFixture {
         return loadClass(name, codegens);
     }
 
+    private static class MyClassLoader extends ClassLoader {
+      public MyClassLoader(ClassLoader parent) {
+        super(parent);
+      }
+
+      public Class doDefineClass(String name, byte[] data) {
+        return defineClass(name, data, 0, data.length);
+      }
+
+      @Override
+      public Class<?> loadClass(String name) throws ClassNotFoundException {
+        return super.loadClass(name);
+      }
+    }
 }