Bug 1656141 - Remove redundant manifest references in rc include files. r=firefox-build-system-reviewers,rstewart

The build system will add these manifests whether they are referenced
explicitly in theses rc include files or not.

Differential Revision: https://phabricator.services.mozilla.com/D86157

accessible/interfaces/ia2/IA2Marshal.rc

@@ -3,4 +3,3 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 1 typelib IA2Typelib.tlb
-2 24 IA2Marshal.dll.manifest

browser/app/splash.rc

@@ -6,8 +6,6 @@
 #include <windows.h>
 #include "nsNativeAppSupportWin.h"
 
-1 24 "firefox.exe.manifest"
-
 IDI_APPICON ICON FIREFOX_ICO
 IDI_DOCUMENT ICON DOCUMENT_ICO
 IDI_APPLICATION ICON FIREFOX_ICO

toolkit/components/maintenanceservice/maintenanceservice.rc

@@ -25,13 +25,6 @@ LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
 #pragma code_page(1252)
 #endif //_WIN32
 
-/////////////////////////////////////////////////////////////////////////////
-//
-// RT_MANIFEST
-//
-
-1                       RT_MANIFEST             "maintenanceservice.exe.manifest"
-
 /////////////////////////////////////////////////////////////////////////////
 //
 // DESIGNINFO

toolkit/crashreporter/client/crashreporter.rc

@@ -50,8 +50,6 @@ END
 
 #endif    // APSTUDIO_INVOKED
 
-1 24 "crashreporter.exe.manifest"
-
 /////////////////////////////////////////////////////////////////////////////
 //
 // Icon