mutex removed, did not work

CrewDatabase.cpp

@@ -47,14 +47,10 @@ CrewDatabase::~CrewDatabase()
 
 QStringList CrewDatabase::getCrews()
 {
-    mutex.lock();
     return crewDB->childKeys();
-    mutex.unlock();
 }
 
 void CrewDatabase::addCrew(int crewID)
 {
-    mutex.lock();
     crewDB->setValue(QString::number(crewID), crewID);
-    mutex.unlock();
 }

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();
 }

main.cpp

@@ -360,6 +360,9 @@ int main(int argc, char *argv[])
 #endif
     // End internal translate loading
 
+    QLocale locale;
+    qDebug() << locale.nativeLanguageName();
+
     QStringList applicationArgs = a.arguments();
     QString selectedAction;
     QString arg1;