remove obsolete file for opengrok agent

Author: Vladimir Kotal

platform/solaris/default/opengrok-agent.properties

@@ -59,7 +59,6 @@ f none usr/opengrok/doc/NOTICE.txt=NOTICE.txt 0444 root sys
 f none usr/opengrok/doc/ctags.config=doc/ctags.config 0444 root sys
 f none usr/opengrok/doc/paths.tsv=paths.tsv 0444 root sys
 f none usr/opengrok/doc/EXAMPLE.txt=doc/EXAMPLE.txt 0444 root sys
-f none usr/opengrok/doc/opengrok-agent.properties=platform/solaris/default/opengrok-agent.properties 0444 root sys
 f none usr/opengrok/lib/opengrok.jar=dist/opengrok.jar 0444 root bin
 d none var/opengrok/share 0755 root sys
 d none var/opengrok/share/plugins 0755 root sys