Avoid redefinition of ggml_log_callback_default

Author: stduhpf

Diff for: ggml_extend.hpp

@@ -119,13 +119,6 @@ __STATIC_INLINE__ struct ggml_tensor* ggml_kronecker(ggml_context* ctx, struct g
                     b);
 }
 
-__STATIC_INLINE__ void ggml_log_callback_default(ggml_log_level level, const char* text, void* user_data) {
-    (void)level;
-    (void)user_data;
-    fputs(text, stderr);
-    fflush(stderr);
-}
-
 __STATIC_INLINE__ void ggml_tensor_set_f32_randn(struct ggml_tensor* tensor, std::shared_ptr<RNG> rng) {
     uint32_t n                        = (uint32_t)ggml_nelements(tensor);
     std::vector<float> random_numbers = rng->randn(n);