Backout changeset 96baea8ac9ab and 85fb6b5bc62a (part of resp. bug 922912 and bug 609976) because it appears it has not been necessary for a while

b2g/installer/removed-files.in

@@ -43,7 +43,3 @@
 @DIR_MACOS@@DLL_PREFIX@mozsqlite3@DLL_SUFFIX@
 #endif
 @DIR_MACOS@@DLL_PREFIX@xpcom@DLL_SUFFIX@
-#ifdef XP_WIN
-  mozjs.dll
-  gkmedias.dll
-#endif

browser/installer/removed-files.in

@@ -124,7 +124,3 @@
 #endif
 @DIR_MACOS@searchplugins/*
 @DIR_MACOS@webapprt/components/
-#ifdef XP_WIN
-  mozjs.dll
-  gkmedias.dll
-#endif