fix =pantheon-base/wingpanel-0.3_p160 epatch error

the patch for pantheon-base/wingpanel/wingpanel-0.3_p160.ebuild is
contain in upstream source, no need these patch anymore.

Signed-off-by: coldnew <coldnew.tw@gmail.com>
Merge pull request #84 from coldnew/master

fix =pantheon-base/wingpanel-0.3_p160 epatch error (upstream switched branches, so now master includes the patches).