configure.ac: remove dbus-glib dependencies
configure.ac: remove dbus-glib dependencies

This completes commit 559877e02ab0da358a64e6f19afa743db131ccc4

hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker,hoheinzollern/tracker,outofbits/tracker,outofbits/tracker,hoheinzollern/tracker,outofbits/tracker,outofbits/tracker,hoheinzollern/tracker,hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker,outofbits/tracker