ci(pytest): use common method install pip package

GitOrigin-RevId: 87162b8b56c177ee38ba2c23a028f32b0888db4d

python_module/setup.py

@@ -87,6 +87,9 @@ setup_kwargs = dict(
         'data': [
             'scipy',
         ],
+        'ci': [
+            'pytest==5.3.0',
+        ],
     },
     cmdclass={'build_ext': build_ext},
 )

python_module/src/cpp/function_replace.cpp

@@ -35,7 +35,6 @@ void throw_fork_cuda_exc() {
     // call chain:
     // python -> fork() -> pthread_atfork -> CudaCheckOnFork ->
     // ForkAfterCudaError::throw_
-    GILManager a;
     mgb_log_warn("try to raise python exception for fork after cuda");
     PyErr_SetString(PyExc_SystemError, "fork after cuda has been initialized");
 }