Merge module 'serialization.jvm' into 'descriptor.loader.java'

It was very small and there proved to be no point in separation of loading Java
classes and deserializing Kotlin classes

core/descriptor.loader.java/descriptor.loader.java.iml

@@ -7,9 +7,8 @@
     </content>
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
-    <orderEntry type="module" module-name="serialization" />
-    <orderEntry type="module" module-name="serialization.jvm" />
     <orderEntry type="library" name="javax.inject" level="project" />
+    <orderEntry type="module" module-name="serialization" />
     <orderEntry type="module" module-name="util.runtime" />
   </component>
 </module>