shader: Simplify condition for the first pass of convert_shader

The ctx variable is set to 0 on the line before so ctx.prog_type is always 0 which
is TGSI_PROCESSOR_FRAGMENT.

Signed-off-by: Corentin Noël <corentin.noel@collabora.com>
Part-of: <https://gitlab.freedesktop.org/virgl/virglrenderer/-/merge_requests/730>

src/vrend_shader.c

@@ -7295,8 +7295,6 @@ bool vrend_convert_shader(const struct vrend_context *rctx,
    memset(&ctx, 0, sizeof(struct dump_ctx));
 
    /* First pass to deal with edge cases. */
-   if (ctx.prog_type == TGSI_PROCESSOR_FRAGMENT ||
-       ctx.prog_type == TGSI_PROCESSOR_VERTEX)
    ctx.iter.iterate_declaration = iter_decls;
    ctx.iter.iterate_instruction = analyze_instruction;
    bret = tgsi_iterate_shader(tokens, &ctx.iter);