[clang] Remove unused-lambda-capture in AArch64.cpp (NFC)

llvm-project/clang/lib/CodeGen/Targets/AArch64.cpp:886:26:
error: lambda capture 'TI' is not used [-Werror,-Wunused-lambda-capture]
  886 |   llvm::sort(Features, [&TI](const StringRef LHS, const StringRef RHS) {
      |                         ~^~
1 error generated.

clang/lib/CodeGen/Targets/AArch64.cpp

@@ -882,8 +882,7 @@ void AArch64ABIInfo::appendAttributeMangling(StringRef AttrStr,
   for (auto &Feat : Features)
     Feat = Feat.trim();
 
-  const TargetInfo &TI = CGT.getTarget();
-  llvm::sort(Features, [&TI](const StringRef LHS, const StringRef RHS) {
+  llvm::sort(Features, [](const StringRef LHS, const StringRef RHS) {
     return LHS.compare(RHS) < 0;
   });