schema: remove old avl_init for definitions tree

src/schema.cpp

@@ -349,7 +349,6 @@ schema_setup(void)
 	if (glob(JSON_SCHEMA_DIR "/definitions/*.json", 0, NULL, &gl))
 		return;
 
-	avl_init(&s_ctx.schema_definitions, avl_strcmp, false, NULL);
 
 	for (i = 0; i < gl.gl_pathc; i++) {
 		dbg("def path = %s\n", gl.gl_pathv[i]);