PoolVector is gone, replaced by Vector

Typed `PoolTypeArray` types are now renamed `PackedTypeArray` and are
sugar for `Vector<Type>`.

drivers/coremidi/midi_driver_coremidi.cpp

@@ -93,9 +93,9 @@ void MIDIDriverCoreMidi::close() {
 	}
 }
 
-PoolStringArray MIDIDriverCoreMidi::get_connected_inputs() {
+PackedStringArray MIDIDriverCoreMidi::get_connected_inputs() {
 
-	PoolStringArray list;
+	PackedStringArray list;
 
 	for (int i = 0; i < connected_sources.size(); i++) {
 		MIDIEndpointRef source = connected_sources[i];

drivers/coremidi/midi_driver_coremidi.h

@@ -52,7 +52,7 @@ public:
 	virtual Error open();
 	virtual void close();
 
-	PoolStringArray get_connected_inputs();
+	PackedStringArray get_connected_inputs();
 
 	MIDIDriverCoreMidi();
 	virtual ~MIDIDriverCoreMidi();