Defer to clang for --hash-style.

We fixed the clang driver to "do the right thing" based on target api level years ago, but these manual workarounds predate that (or were copy & pasted from places that predated that). We don't need them any more.

See https://github.com/android/ndk/issues/2005 for more detail.

Change-Id: I995741b8606e389e8de8272f1cc532624516245a

cc/config/x86_device.go

@@ -33,9 +33,7 @@ var (
 
 	x86Cppflags = []string{}
 
-	x86Ldflags = []string{
-		"-Wl,--hash-style=gnu",
-	}
+	x86Ldflags = []string{}
 
 	x86ArchVariantCflags = map[string][]string{
 		"": []string{