gallium: remove pipe_grid_info::input

Acked-by: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Mary Guillemard <mary.guillemard@collabora.com>
Reviewed-by: Jose Maria Casanova Crespo <jmcasanova@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34623>

src/gallium/auxiliary/driver_trace/tr_dump_state.c

@@ -1164,7 +1164,6 @@ void trace_dump_grid_info(const struct pipe_grid_info *state)
 
    trace_dump_struct_begin("pipe_grid_info");
 
-   trace_dump_member(ptr, state, input);
    trace_dump_member(uint, state, variable_shared_mem);
 
    trace_dump_member_begin("block");

src/gallium/auxiliary/util/u_dump_state.c

@@ -976,7 +976,6 @@ void util_dump_grid_info(FILE *stream, const struct pipe_grid_info *state)
 
    util_dump_struct_begin(stream, "pipe_grid_info");
 
-   util_dump_member(stream, ptr, state, input);
    util_dump_member(stream, uint, state, work_dim);
 
    util_dump_member_begin(stream, "block");

src/gallium/auxiliary/util/u_threaded_context.c

@@ -4415,7 +4415,6 @@ tc_launch_grid(struct pipe_context *_pipe,
    struct threaded_context *tc = threaded_context(_pipe);
    struct tc_launch_grid_call *p = tc_add_call(tc, TC_CALL_launch_grid,
                                                tc_launch_grid_call);
-   assert(info->input == NULL);
 
    tc_set_resource_reference(&p->info.indirect, info->indirect);
    memcpy(&p->info, info, sizeof(*info));

src/gallium/include/pipe/p_state.h

@@ -940,12 +940,6 @@ struct pipe_blit_info
  */
 struct pipe_grid_info
 {
-   /**
-    * Will be used to initialize the INPUT resource, and it should point to a
-    * buffer of at least pipe_compute_state::req_input_mem bytes.
-    */
-   const void *input;
-
    /**
     * Variable shared memory used by this invocation.
     *