Debugger: remove isEditorDebuggable

It was returning 'true' unconditionally for a while.

Change-Id: Ia99bdb3c525641f757dacbba148b68d677f4d632
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/debugger/watchutils.h

@@ -51,7 +51,6 @@ namespace Internal {
 class WatchData;
 class GdbMi;
 
-bool isEditorDebuggable(Core::IEditor *editor);
 QByteArray dotEscape(QByteArray str);
 QString currentTime();
 bool isSkippableFunction(const QString &funcName, const QString &fileName);