Revert "Allow the generic specializer to specialize transparent functions."

This reverts commit r26362, because I forgot to delete one test and
update another for this change.

Swift SVN r26363

lib/SILPasses/Utils/Generics.cpp

@@ -102,6 +102,12 @@ void GenericSpecializer::addApplyInst(ApplyInst *AI) {
 }
 
 void GenericSpecializer::collectApplyInst(SILFunction &F) {
+  // Don't collect apply inst from transparent functions since we do not want to
+  // expose shared functions in the mandatory inliner. We will specialize the
+  // relevant callsites after we inline.
+  if (F.isTransparent())
+    return;
+
   // Scan all of the instructions in this function in search of ApplyInsts.
   for (auto &BB : F)
     for (auto &I : BB) {