[gwt-contrib] Removes vestiges of TypeOracle support for local types. (issue761801)

[scottb]

Reviewers: jat,

Description:
TypeOracle hasn't supported local types for a while, this change removes
traces of it.
Please review this at http://gwt-code-reviews.appspot.com/761801/show

Affected files:
  M dev/core/src/com/google/gwt/core/ext/typeinfo/JAnnotationType.java
  M dev/core/src/com/google/gwt/core/ext/typeinfo/JArrayType.java
  M dev/core/src/com/google/gwt/core/ext/typeinfo/JClassType.java
  M dev/core/src/com/google/gwt/core/ext/typeinfo/JDelegatingClassType.java
  M dev/core/src/com/google/gwt/core/ext/typeinfo/JEnumType.java
  M dev/core/src/com/google/gwt/core/ext/typeinfo/JGenericType.java
  M dev/core/src/com/google/gwt/core/ext/typeinfo/JRealClassType.java
  M dev/core/src/com/google/gwt/core/ext/typeinfo/TypeOracleBuilder.java
  M dev/core/src/com/google/gwt/dev/javac/TypeOracleMediator.java
  M  
dev/core/test/com/google/gwt/core/ext/typeinfo/JDelegatingClassTypeTestBase.java
  M dev/core/test/com/google/gwt/core/ext/typeinfo/JTypeParameterTest.java
  M dev/core/test/com/google/gwt/dev/javac/asm/ResolveGenericsTest.java
  M  
user/src/com/google/gwt/user/rebind/rpc/SerializableTypeOracleBuilder.java
  M  
user/test/com/google/gwt/user/rebind/rpc/SerializableTypeOracleBuilderTest.java


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