Removing a comment outdated since 66cfa92f

Source commit: 21cdbfd8cb18e1a030a17d8740a73dd5f7675494

deployment/winscpsetup.iss

@@ -480,8 +480,6 @@ begin
     if (InstalledMajor <> ExistingMajor) or
        ((ExistingMajor = 1) and (ExistingMinor <= 1)) then
     begin
-      // Still on 1.x, so this won't be used when upgrading,
-      // but it will be useful, if downgrading from future version with a different major version.
       if InstalledMajor <> ExistingMajor then
       begin
         Log('Existing extension has different major version, allowing installation, and will require restart, if it is locked.')