Temporarily unship private browsing executable

Author: K4sum1

browser/installer/package-manifest.in

@@ -130,7 +130,6 @@
 @BINPATH@/firefox.VisualElementsManifest.xml
 @BINPATH@/browser/VisualElements/VisualElements_150.png
 @BINPATH@/browser/VisualElements/VisualElements_70.png
-@BINPATH@/private_browsing.exe
 @BINPATH@/private_browsing.VisualElementsManifest.xml
 @BINPATH@/browser/VisualElements/PrivateBrowsing_150.png
 @BINPATH@/browser/VisualElements/PrivateBrowsing_70.png