Remove malloc_trim

Reviewers: mferencevic

Reviewed By: mferencevic

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D876

src/storage/deferred_deleter.hpp

@@ -65,12 +65,6 @@ class DeferredDeleter {
       ++it;
     }
     objects_.erase(objects_.begin(), it);
-    // After deleting objects - to force release of now deleted (free) memory
-    // back to OS we need to call malloc_trim. This will force memgraph to
-    // return memory from top of the heap to OS. If we don't use this, it seems
-    // to the outside observer we are leaking memory while in fact we are not,
-    // we were just keeping it close by in case we need it in near future.
-    malloc_trim(0);
   }
 
   /**