android: gallium/virgl: cleanup virgl_driinfo.h gen rules

Android.mk and Makefile.sources are still defining virgl_driinfo.h target
This patch removes the remaining gen rules

Fixes the following building error:

FAILED: out/target/product/x86_64/obj/STATIC_LIBRARIES/libmesa_pipe_virgl_intermediates/virgl/virgl_driinfo.h
...
cp: bad 'out/target/product/x86_64/gen/STATIC_LIBRARIES/libmesa_pipe_virgl_intermediates/virgl/virgl_driinfo.h': No such file or directory

Fixes: 974981c4e6b9 ("gallium/drm: Make the pipe loader handle the driconf merging.")
Signed-off-by: Mauro Rossi <issor.oruam@gmail.com>
Acked-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6880>
diff --git a/src/gallium/drivers/virgl/Android.mk b/src/gallium/drivers/virgl/Android.mk
index 1335dc5..a64828e 100644
--- a/src/gallium/drivers/virgl/Android.mk
+++ b/src/gallium/drivers/virgl/Android.mk
@@ -30,19 +30,8 @@
 
 LOCAL_MODULE := libmesa_pipe_virgl
 
-LOCAL_MODULE_CLASS := STATIC_LIBRARIES
-
 LOCAL_C_INCLUDES := $(MESA_TOP)/src/virtio
 
-intermediates := $(call local-generated-sources-dir)
-LOCAL_GENERATED_SOURCES := $(intermediates)/virgl/virgl_driinfo.h
-
-GEN_DRIINFO_INPUTS := \
-	$(MESA_TOP)/src/gallium/auxiliary/pipe-loader/driinfo_gallium.h \
-	$(LOCAL_PATH)/virgl_driinfo.h.in
-
-LOCAL_EXPORT_C_INCLUDE_DIRS := $(intermediates)
-
 include $(GALLIUM_COMMON_MK)
 include $(BUILD_STATIC_LIBRARY)