remove credits tab

--v0.8 is officialy KDE project, so its
existence owes a lot of credits to many
KDE members (for translations, bug reporting
etc.). Being officially a KDE project
responds to the previous credits.

app/main.cpp

@@ -276,16 +276,6 @@ inline void configureAboutData()
     about.addAuthor(QStringLiteral("Michail Vourlakos"), QString(), QStringLiteral("mvourlakos@gmail.com"));
     about.addAuthor(QStringLiteral("Smith AR"), QString(), QStringLiteral("audoban@openmailbox.org"));
 
-    // Credits
-    about.addCredit(QStringLiteral("Alexey Varfolomeev (varlesh)"), i18n("Logo and Icons")
-                    , QString(), QStringLiteral("https://github.com/varlesh"));
-    about.addCredit(QStringLiteral("Ivan Bordoni"), i18n("Many bug reports")
-                    , QString(), QStringLiteral("https://github.com/JenaPlinsky"));
-    about.addCredit(QStringLiteral("Kupiqu"), i18n("Many bug reports")
-                    , QString(), QStringLiteral("https://github.com/kupiqu"));
-    about.addCredit(QStringLiteral("Ernesto Acosta (elav)"), i18n("Reviews for Latte Dock, CandilDock and NowDock")
-                    , QString(), QStringLiteral("https://github.com/elav"));
-
     KAboutData::setApplicationData(about);
 }