Remove special case for aarch64 static vs. PIC code in iOS kernel code.

I added this check a while back but then made a note to myself that it
should be completely unnecessary since iOS always uses PIC code-gen for
aarch64. Since I could never come up with any reason why it would be
necessary, I'm just going to remove it and we'll see if anything breaks.
rdar://problem/13627985

llvm-svn: 223097
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 7e30273..d70be30 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -2753,8 +2753,7 @@
   // Note that these flags are trump-cards. Regardless of the order w.r.t. the
   // PIC or PIE options above, if these show up, PIC is disabled.
   llvm::Triple Triple(TripleStr);
-  if (KernelOrKext && (!Triple.isiOS() || Triple.isOSVersionLT(6) ||
-                       Triple.getArch() == llvm::Triple::aarch64))
+  if (KernelOrKext && (!Triple.isiOS() || Triple.isOSVersionLT(6)))
     PIC = PIE = false;
   if (Args.hasArg(options::OPT_static))
     PIC = PIE = false;