undoing function call in core init to clean persistent connections

tripal_core/tripal_core.module

@@ -66,8 +66,6 @@ function tripal_core_init() {
   // make sure the current version of chado is set
   tripal_core_set_chado_version();
   
-  // reset the persistant connection
-  tripal_db_release_persistent_chado();
 }
 
 /**