The new config you specified should only grab /var/log/apache2/access.log* . If you're getting things that don't match that pattern, there is most likely some other input configured that's grabbing them.
To see all of the inputs configured on your forwarder, you can run $SPLUNK_HOME\bin\splunk btool inputs list and then look for any stanzas which match the files you don't want to collect.
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