[IRGen] Delete no-op code

Commit 5c3ccf5 added a number of blocks of code which were partially
removed by 39af79f. This partial remove left lines of code doing nothin; we
remove them here.

Author: felipepiovezan

lib/IRGen/IRGenDebugInfo.cpp

@@ -2987,11 +2987,6 @@ void IRGenDebugInfoImpl::emitGlobalVariableDeclaration(
   if (Opts.DebugInfoLevel <= IRGenDebugInfoLevel::LineTables)
     return;
 
-  if (swift::TypeBase *ty = DbgTy.getType()) {
-    if (MetatypeType *metaTy = dyn_cast<MetatypeType>(ty))
-      ty = metaTy->getInstanceType().getPointer();
-  }
-
   llvm::DIType *DITy = getOrCreateType(DbgTy);
   VarDecl *VD = nullptr;
   if (Loc)

lib/IRGen/IRGenSIL.cpp

@@ -1159,11 +1159,6 @@ class IRGenSILFunction :
       const SILDebugScope *DS, SILLocation VarLoc, SILDebugVariable VarInfo,
       IndirectionKind Indirection,
       AddrDbgInstrKind DbgInstrKind = AddrDbgInstrKind::DbgDeclare) {
-    if (swift::TypeBase *ty = SILTy.getASTType().getPointer()) {
-      if (MetatypeType *metaTy = dyn_cast<MetatypeType>(ty))
-        ty = metaTy->getRootClass().getPointer();
-    }
-
     assert(IGM.DebugInfo && "debug info not enabled");
 
     if (VarInfo.ArgNo) {