Really fix tysan test failing on unsupported arches (llvm#169096)

'target' is not one of the features recognized by clang tests, and the
test doesn't require X86 backend to be built. Specify the target
explicitly instead. Remove duplicate `-fsanitize=type` as well.

Author: s-barannikov

clang/test/CodeGen/sanitize-type-outlined.cpp

@@ -1,9 +1,7 @@
-// REQUIRES: target=x86_64-linux-gnu
-
-// RUN: %clang -S -fsanitize=type -emit-llvm -o - -fsanitize=type %s \
+// RUN: %clang --target=x86_64-linux-gnu -S -fsanitize=type -emit-llvm -o - %s \
 // RUN:     -fno-sanitize-type-outline-instrumentation \
 // RUN:     | FileCheck %s --check-prefixes=CHECK-NO-OUTLINE
-// RUN: %clang -S -fsanitize=type -emit-llvm -o - -fsanitize=type %s \
+// RUN: %clang --target=x86_64-linux-gnu -S -fsanitize=type -emit-llvm -o - %s \
 // RUN:     -fsanitize-type-outline-instrumentation \
 // RUN:     | FileCheck %s --check-prefixes=CHECK-OUTLINE