Remove the ability to add a PrePAN profile

The user's profile page (metacpan.org/account/profile) still displayed
PrePAN as an available profile option, despite it no longer existing.
This commit removes all of the files associated with PrePAN.

Resolves #3074.

Author: tessarin

lib/MetaCPAN/Web/Model/API/Author.pm

@@ -201,10 +201,6 @@ my $profile_data = {
         name       => 'Pinboard',
         url_format => 'https://pinboard.in/u:%s',
     },
-    prepan => {
-        name       => 'PrePAN',
-        url_format => 'http://prepan.org/user/%s',
-    },
     reddit => {
         name       => 'Reddit',
         url_format => 'https://www.reddit.com/user/%s',

root/static/images/profile/prepan.png

@@ -185,9 +185,6 @@
                 &.profile-posterous .control-label {
                     background-image: url(/static/images/profile/posterous.png);
                 }
-                &.profile-prepan .control-label {
-                    background-image: url(/static/images/profile/prepan.png);
-                }
                 &.profile-reddit .control-label {
                     background-image: url(/static/images/profile/reddit.png);
                 }

root/static/less/account.less

@@ -388,7 +388,6 @@ cf600d1ce2ba84d54bc210ed4859b90a07d22f6a  root/static/images/profile/newsvine.pn
 a8caffce132bcfdaa0d87d6311ca7ba40be30e9d  root/static/images/profile/pinboard.png
 bbc03be0b7e878b0ac5b552ca1c2c4a568dcd744  root/static/images/profile/playperl.png
 723b1d505ba65d0d11c3e7e5f33158ae1349cc5b  root/static/images/profile/posterous.png
-0e5490b976ed2a7bbdcc9a71dfe880ef7deca898  root/static/images/profile/prepan.png
 f53a57193f209a34f70bb791750cb60df3a4cb30  root/static/images/profile/reddit.png
 9375111d1ec664e1c38203b419e4518f770076d6  root/static/images/profile/slideshare.png
 3911607f7c8558628bf3da1dac17c629f073a490  root/static/images/profile/sourceforge.png