Revert "[ARM] CMSE code generation"

This reverts commit 7cbbf89.

The regression tests fail with the expensive checks.

Author: momchil-velikov

llvm/lib/Target/ARM/ARMAsmPrinter.cpp

@@ -73,16 +73,6 @@ void ARMAsmPrinter::emitFunctionEntryLabel() {
   } else {
     OutStreamer->emitAssemblerFlag(MCAF_Code32);
   }
-
-  // Emit symbol for CMSE non-secure entry point
-  if (AFI->isCmseNSEntryFunction()) {
-    MCSymbol *S =
-        OutContext.getOrCreateSymbol("__acle_se_" + CurrentFnSym->getName());
-    emitLinkage(&MF->getFunction(), S);
-    OutStreamer->emitSymbolAttribute(S, MCSA_ELF_TypeFunction);
-    OutStreamer->emitLabel(S);
-  }
-
   OutStreamer->emitLabel(CurrentFnSym);
 }