Drop unused lobobrowser cobra artifact and its local maven repo

The cobra-0.98.4 jar/pom under installers/lobobrowser was published via a
'local' maven repo declaration but no module depended on it. Remove the
artifact, the stale .iml beside it, and the now-pointless repo entry.

Author: Vest

build.gradle

@@ -100,10 +100,6 @@ repositories {
         url = 'http://pc-gen.org/librepo/'
         allowInsecureProtocol = true
     }
-    maven {
-        name = 'local'
-        url = 'installers'
-    }
     // Use Maven plugin to reference JBoss artifact repository
     // TODO Which libs do we pull from here?
     maven {