Hygiene: remove redundant lint suppression
Hygiene: remove redundant lint suppression

Android Studio v2.1.2 no longer seems to incorrectly lint Preference
styles. Remove the suppressions.

Change-Id: I0729a2fdd6b45deab81bf5b37f74bb96dd0409d9

wikimedia/apps-android-wikipedia,wikimedia/apps-android-wikipedia,wikimedia/apps-android-wikipedia,Duct-and-rice/KrswtkhrWiki4Android,Duct-and-rice/KrswtkhrWiki4Android,anirudh24seven/apps-android-wikipedia,dbrant/apps-android-wikipedia,anirudh24seven/apps-android-wikipedia,SAGROUP2/apps-android-wikipedia,dbrant/apps-android-wikipedia,SAGROUP2/apps-android-wikipedia,SAGROUP2/apps-android-wikipedia,anirudh24seven/apps-android-wikipedia,Duct-and-rice/KrswtkhrWiki4Android,dbrant/apps-android-wikipedia,dbrant/apps-android-wikipedia,anirudh24seven/apps-android-wikipedia,anirudh24seven/apps-android-wikipedia,Duct-and-rice/KrswtkhrWiki4Android,dbrant/apps-android-wikipedia,Duct-and-rice/KrswtkhrWiki4Android,wikimedia/apps-android-wikipedia,SAGROUP2/apps-android-wikipedia,SAGROUP2/apps-android-wikipedia