Cleans up more legacy code from ACE

Rewrote some code to replace gEnv->pCryPak and ISystem usage.  One place
was grabbing a Camera view from ISystem, replaced with simple identity
matrix.  Cleaned up include headers.

Signed-off-by: amzn-phist <52085794+amzn-phist@users.noreply.github.com>

Gems/AudioSystem/Code/Source/Editor/ATLControlsPanel.cpp

@@ -16,13 +16,8 @@
 #include <ATLControlsModel.h>
 #include <AudioControl.h>
 #include <AudioControlsEditorPlugin.h>
-#include <CryFile.h>
-#include <CryPath.h>
-#include <Cry_Camera.h>
-#include <IAudioSystem.h>
 #include <IAudioSystemControl.h>
 #include <IAudioSystemEditor.h>
-#include <IEditor.h>
 #include <QAudioControlEditorIcons.h>
 
 #include <QWidgetAction>