Getting Postgres related error - not using Postgres

Using Codeigniter 3.0, when my application starts up, I get the following error:

Severity: Core Warning

Message: PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/pgsql.so' - /usr/lib64/php/modules/pgsql.so: undefined symbol: lo_import_with_oid

Filename: Unknown

Line Number: 0

Backtrace:

I am not using Postgres in any of my routines, and the server I am on does not have postgres installed. Is there a line in any of the Codeigniter system files that I can delete to get rid of this Postgres reference.