tests/capi: omit sysprof testing

The commit d72e40f ("tests: enable sysprof in
luaL_loadbuffer_proto") added sysprof support to
the luaL_loadbuffer_proto_test. With test misc_sysprof_test.lua
added in the previous commit sysprof in luaL_loadbuffer_proto_test
is not needed anymore. The patch removes it.

Author: ligurio

tests/capi/luaL_loadbuffer_proto/luaL_loadbuffer_proto_test.cc

@@ -180,14 +180,6 @@ metrics_increment_num_error_samples(struct metrics *metrics)
 	metrics->total_num_with_errors++;
 }
 
-UNUSED static void
-profiler_cb(lua_State *L, void *data, int samples, int vmstate)
-{
-	(void)L;
-	(void)data;
-	/* Do nothing. */
-}
-
 /**
  * Get an error message from the stack, and report it to std::cerr.
  * Remove the message from the stack.
@@ -355,31 +347,6 @@ DEFINE_PROTO_FUZZER(const lua_grammar::Block &message)
 	luaL_dostring(L, "jit.opt.start('hotexit=1')");
 	luaL_dostring(L, "jit.opt.start('recunroll=1')");
 	luaL_dostring(L, "jit.opt.start('callunroll=1')");
-
-	/*
-	 * The `mode` argument is a string holding options:
-	 * f - Profile with precision down to the function level.
-	 * l - Profile with precision down to the line level.
-	 * i<number> - Sampling interval in milliseconds (default 10ms).
-	 */
-	char mode[] = "fli15";
-	size_t depth = 5;
-	int len = 5;
-
-	/* Start profiler. */
-	luaJIT_profile_start(L, mode, (luaJIT_profile_callback)profiler_cb, NULL);
-
-	/*
-	 * Function allows taking stack dumps in an efficient manner, returns a
-	 * string with a stack dump for the thread (coroutine), formatted according
-	 * to the fmt argument:
-	 *   p - Preserve the full path for module names.
-	 *   f - Dump the function name if it can be derived.
-	 *   F - Ditto, but dump module:name.
-	 *   l - Dump module:line.
-	 *   Z - Zap the following characters for the last dumped frame.
-	 */
-	luaJIT_profile_dumpstack(L, "pfFlz", len, &depth);
 #endif /* LUAJIT */
 
 	if (luaL_loadbuffer(L, code.c_str(), code.size(), "fuzz") != LUA_OK) {
@@ -416,8 +383,6 @@ DEFINE_PROTO_FUZZER(const lua_grammar::Block &message)
 	lua_sethook(L, Hook, 0, count);
 #ifdef LUAJIT
 	disable_lj_metrics(L, &metrics);
-	/* Stop profiler. */
-	luaJIT_profile_stop(L);
 #endif /* LUAJIT */
 
 	lua_settop(L, 0);