vrend: remove vrend_lookup_renderer_ctx

Context lookup should happen in virglrenderer.c such that we can
dispatch through the context callbacks.  Being able to get rid of
vrend_lookup_renderer_ctx (context lookup inside vrend) is
significant.

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Tested-by: Gurchetan Singh <gurchetansingh@chromium.org>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>

src/vrend_decode.c

@@ -1415,13 +1415,6 @@ struct virgl_context *vrend_renderer_context_create(uint32_t handle,
    return &dctx->base;
 }
 
-struct vrend_context *vrend_lookup_renderer_ctx(uint32_t ctx_id)
-{
-   struct vrend_decode_ctx *dctx =
-      (struct vrend_decode_ctx *)virgl_context_lookup(ctx_id);
-   return dctx ? dctx->grctx : NULL;
-}
-
 static void vrend_decode_ctx_destroy(struct virgl_context *ctx)
 {
    struct vrend_decode_ctx *dctx = (struct vrend_decode_ctx *)ctx;

src/vrend_renderer.h

@@ -340,8 +340,6 @@ void vrend_set_tess_state(struct vrend_context *ctx, const float tess_factors[6]
 
 void vrend_renderer_fini(void);
 
-struct vrend_context *vrend_lookup_renderer_ctx(uint32_t ctx_id);
-
 int vrend_renderer_create_fence(int client_fence_id, uint32_t ctx_id);
 
 void vrend_renderer_check_fences(void);