Allow duplicate keys in HashMap

src/UDPC_HashMap.c

@@ -90,8 +90,6 @@ void* UDPC_HashMap_insert(UDPC_HashMap *hm, uint32_t key, void *data)
         }
     }
 
-    UDPC_HashMap_remove(hm, key);
-
     uint32_t hash = UDPC_HASH32(key) % hm->capacity;
 
     char *temp = malloc(sizeof(uint32_t) + hm->unitSize);