AirspaceAdvisoryProvider: Remove QString constructor with tr

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

src/AirspaceManagement/AirspaceAdvisoryProvider.cc

@@ -27,20 +27,20 @@ QString
 AirspaceAdvisory::typeStr()
 {
     switch(type()) {
-    case Airport:               return QString(tr("Airport"));
-    case Controlled_airspace:   return QString(tr("Controlled Airspace"));
-    case Special_use_airspace:  return QString(tr("Special Use Airspace"));
-    case Tfr:                   return QString(tr("TFR"));
-    case Wildfire:              return QString(tr("Wild Fire"));
-    case Park:                  return QString(tr("Park"));
-    case Power_plant:           return QString(tr("Power Plant"));
-    case Heliport:              return QString(tr("Heliport"));
-    case Prison:                return QString(tr("Prison"));
-    case School:                return QString(tr("School"));
-    case Hospital:              return QString(tr("Hospital"));
-    case Fire:                  return QString(tr("Fire"));
-    case Emergency:             return QString(tr("Emergency"));
-    case Invalid:               return QString(tr("Custom"));
-    default:                    return QString(tr("Unknown"));
+    case Airport:               return tr("Airport");
+    case Controlled_airspace:   return tr("Controlled Airspace");
+    case Special_use_airspace:  return tr("Special Use Airspace");
+    case Tfr:                   return tr("TFR");
+    case Wildfire:              return tr("Wild Fire");
+    case Park:                  return tr("Park");
+    case Power_plant:           return tr("Power Plant");
+    case Heliport:              return tr("Heliport");
+    case Prison:                return tr("Prison");
+    case School:                return tr("School");
+    case Hospital:              return tr("Hospital");
+    case Fire:                  return tr("Fire");
+    case Emergency:             return tr("Emergency");
+    case Invalid:               return tr("Custom");
+    default:                    return tr("Unknown");
     }
 }