win-capture: Remove obsolete translation

A commit 80b4a65cd2 added a translation `Method.Auto` but the source
code uses `WindowCapture.Method.Auto` instead.

plugins/win-capture/data/locale/en-US.ini

@@ -18,7 +18,6 @@ AllowTransparency="Allow Transparency"
 Monitor="Display"
 PrimaryMonitor="Primary Monitor"
 Method="Capture Method"
-Method.Auto="Automatic"
 Method.DXGI="DXGI Desktop Duplication"
 Method.WindowsGraphicsCapture="Windows 10 (1903 and up)"
 GameCapture="Game Capture"