mutex removed, did not work

ProfileDatabase.cpp

@@ -47,21 +47,15 @@ ProfileDatabase::~ProfileDatabase()
 
 QStringList ProfileDatabase::getPlayers()
 {
-    mutex.lock();
     return profileDB->childKeys();
-    mutex.unlock();
 }
 
 QString ProfileDatabase::getPlayerName(int playerID)
 {
-    mutex.lock();
     return profileDB->value(QString::number(playerID), playerID).toString();
-    mutex.unlock();
 }
 
 void ProfileDatabase::setPlayerName(int playerID, QString playerName)
 {
-    mutex.lock();
     profileDB->setValue(QString::number(playerID), playerName);
-    mutex.unlock();
 }