Make RecordingPrefs.cpp independent of Warning

src/widgets/Warning.cpp

@@ -109,8 +109,3 @@ int ShowWarningDialog(wxWindow *parent,
    gPrefs->Flush();
    return wxID_OK;
 }
-
-wxString WarningDialogKey(const wxString &internalDialogName)
-{
-   return wxT("/Warnings/") + internalDialogName;
-}

src/widgets/Warning.h

@@ -30,9 +30,4 @@ int ShowWarningDialog(wxWindow *parent,
                       // This message appears by the checkbox:
                       const wxString &footer = DefaultWarningFooter());
 
-/// Return the config file key associated with a warning dialog identified
-/// by internalDialogName.  When the box is checked, the value at the key
-/// becomes false.
-wxString WarningDialogKey(const wxString &internalDialogName);
-
 #endif // __AUDACITY_WARNING__