tests : avoid building get-model.cpp many times (#26317)

* tests : remove get-model.cpp

* tests : fix quant type selection

tests/test-autorelease.cpp

@@ -1,15 +1,13 @@
 // ref: https://github.com/ggml-org/llama.cpp/issues/4952#issuecomment-1892864763
 
-#include <cstdio>
-#include <string>
 #include <thread>
 
 #include "llama.h"
-#include "get-model.h"
+#include "common.h"
 
 // This creates a new context inside a pthread and then tries to exit cleanly.
 int main(int argc, char ** argv) {
-    auto * model_path = get_model_or_exit(argc, argv);
+    auto * model_path = common_get_model_or_exit(argc, argv);
 
     std::thread([&model_path]() {
         llama_backend_init();