extract method: redundant cast treatments (IDEA-125259)

java/java-tests/testData/refactoring/extractMethod/Cast4ParamGeneration_after.java

@@ -6,7 +6,7 @@ public class Test {
   }
 
     private void newMethod(A o) {
-        ((A)o).bar();
+        o.bar();
     }
 }
 

java/java-tests/testData/refactoring/extractMethod/CastWhenDuplicateReplacement_after.java

@@ -6,6 +6,6 @@ class Test {
     }
 
     private String newMethod(String x) {
-        return ((String)x).substring(1);
+        return x.substring(1);
     }
 }

java/java-tests/testData/refactoring/extractMethod/InvalidReference_after.java

@@ -6,6 +6,6 @@ class Test {
   }
 
     private PsiPackage newMethod(IOException targetElement) {
-        return JavaDirectoryService.getInstance().getPackage((IOException)targetElement);
+        return JavaDirectoryService.getInstance().getPackage(targetElement);
     }
 }