Win SDK: remove test of llvm-rs-cc presence.

This removes the test that makes the SDK only strip llvm-rs-cc.exe if present.
It means the SDK will FAIL if llvm-rs-cc wasn't build successfully for Windows.

Change-Id: I4c73954c30265e71e84916976f16ae76d67a8e13
diff --git a/build/tools/windows_sdk.mk b/build/tools/windows_sdk.mk
index 91033a6..7dc6b7f 100644
--- a/build/tools/windows_sdk.mk
+++ b/build/tools/windows_sdk.mk
@@ -87,10 +87,7 @@
 	$(hide) USB_DRIVER_HOOK=$(USB_DRIVER_HOOK) \
 		$(TOPDIR)development/build/tools/patch_windows_sdk.sh $(subst @,-q,$(hide)) \
 		$(WIN_SDK_DIR)/$(WIN_SDK_NAME) $(OUT_DIR) $(TOPDIR)
-	# TODO remove test once llvm-rs-cc is merged
-	$(hide) if [ -f $(WIN_SDK_DIR)/$(WIN_SDK_NAME)/platform-tools/llvm-rs-cc.exe ]; then \
-			strip --strip-all $(WIN_SDK_DIR)/$(WIN_SDK_NAME)/platform-tools/llvm-rs-cc.exe; \
-		fi
+	$(hide) strip --strip-all $(WIN_SDK_DIR)/$(WIN_SDK_NAME)/platform-tools/llvm-rs-cc.exe
 	$(hide) $(TOPDIR)sdk/build/patch_windows_sdk.sh $(subst @,-q,$(hide)) \
 		$(WIN_SDK_DIR)/$(WIN_SDK_NAME) $(OUT_DIR) $(TOPDIR)
 	$(hide) ( \