Make update-webkit-localizable-strings put WebKit/win strings in WebCore

Make update-webkit-localizable-strings put WebKit/win strings in WebCore
now that all localized strings in WebKit/win use WEB_UI_STRING.

https://webkit.org/b/58747

Reviewed by Dan Bernstein.

Source/WebCore:

* English.lproj/Localizable.strings: Updated with strings from WebKit/win.

Source/WebKit:

* English.lproj/Localizable.strings: Removed.

Tools:

* Scripts/update-webkit-localizable-strings: Remove the code that updated WebKit/win differently.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@84158 268f45cc-cd09-0410-ab3c-d52691b4dbfc