[Analyzer] Remove warning caused by commit `rGe22ace8ba2b0`

clang/unittests/StaticAnalyzer/TestReturnValueUnderConstruction.cpp

@@ -23,9 +23,6 @@ class TestReturnValueUnderConstructionChecker
   : public Checker<check::PostCall> {
 public:
   void checkPostCall(const CallEvent &Call, CheckerContext &C) const {
-    // We are checking the invocation of `returnC` which returns an object
-    // by value.
-    const IdentifierInfo *ID = Call.getCalleeIdentifier();
     // Only calls with origin expression are checked. These are `returnC()`
     // and C::C().
     if (!Call.getOriginExpr())