Bug 116836 [clean up] Remove unnecessary casts
I20051116-1332 Clean up could offer "Remove unnecessary casts".
org.eclipse.jdt.ui.tests/ui/org/eclipse/jdt/ui/tests/quickfix/CleanUpTest.java
buf= new StringBuffer();
		buf.append("package test2;\n");
		buf.append("public class E3 {\n");
		buf.append("    private int i;\n");
		buf.append("    private int j;\n");
		buf.append("    private void foo() {\n");
		buf.append("        i= 10;\n");
		buf.append("        i= 20;\n");
		buf.append("        i= j;\n");
		buf.append("    }\n");
		buf.append("}\n");
		ICompilationUnit cu3= pack2.createCompilationUnit("E3.java", buf.toString(), false, null);
		
		CleanUpRefactoring refactoring= new CleanUpRefactoring();
		refactoring.addCompilationUnit(cu1);
		refactoring.addCompilationUnit(cu2);
		refactoring.addCompilationUnit(cu3);
		
		ICleanUp cleanUp= new UnusedCodeCleanUp(UnusedCodeCleanUp.REMOVE_UNUSED_PRIVATE_FIELDS);
		refactoring.addCleanUp(cleanUp);
		
		buf= new StringBuffer();
		buf.append("package test1;\n");
		buf.append("public class E1 {\n");
		buf.append("}\n");
		String expected1= buf.toString();
		
		buf= new StringBuffer();
		buf.append("package test1;\n");
		buf.append("public class E2 {\n");