Remove a debugging message left in a unit test. (#137451)

This should fix the regression reported in
llvm/llvm-project#136016 (comment)

Author: abidh

llvm/unittests/Transforms/Utils/CodeExtractorTest.cpp

@@ -787,7 +787,6 @@ TEST(CodeExtractor, ArgsDebugInfo) {
     CE.findAllocas(CEAC, SinkingCands, HoistingCands, CommonExit);
     CE.findInputsOutputs(Inputs, Outputs, SinkingCands);
     Function *Outlined = CE.extractCodeRegion(CEAC, Inputs, Outputs);
-    Outlined->dump();
     EXPECT_TRUE(Outlined);
     BasicBlock &EB = Outlined->getEntryBlock();
     Instruction *Term = EB.getTerminator();