[cmo] [aggresive] Don't attach the usableFromInline attribute

in the CMO pass in aggressive mode

Changing the AST mid-pipeline is probably not a good idea.

rdar://173172456

lib/Serialization/SerializedModuleLoader.cpp

@@ -991,6 +991,8 @@ LoadedFile *SerializedModuleLoaderBase::loadAST(
       M.setStrictMemorySafety();
     if (loadedModuleFile->deferredCodeGen())
       M.setDeferredCodeGen();
+    if (loadedModuleFile->isAggressiveCMOEnabled())
+      M.setAggressiveCMOEnabled();
     if (loadedModuleFile->hasCxxInteroperability()) {
       M.setHasCxxInteroperability();
       M.setCXXStdlibKind(loadedModuleFile->getCXXStdlibKind());