libvulkan: Fix for -Wcast-calling-convention

It should be harmless, as NoOp does not use any argument and should never
be reached.

Bug: 30290462
Change-Id: I0592c3ce10c510713525b5aa0bd38a2f9adc5898
diff --git a/vulkan/libvulkan/Android.mk b/vulkan/libvulkan/Android.mk
index 4d2cffc..f1155ca 100644
--- a/vulkan/libvulkan/Android.mk
+++ b/vulkan/libvulkan/Android.mk
@@ -25,8 +25,7 @@
 	-Weverything -Werror \
 	-Wno-padded \
 	-Wno-switch-enum \
-	-Wno-undef \
-	-Wno-cast-calling-convention
+	-Wno-undef
 
 #LOCAL_CFLAGS += -DLOG_NDEBUG=0
 LOCAL_CPPFLAGS := -std=c++14 \