Bug 1381577 - Part L; Support signing windows nightlies. r=kmoir

Land date changes to support windows nightlies onto central

MozReview-Commit-ID: 9b5Sc2YDL6z

--HG--
extra : rebase_source : cfe3ef17db0a85b5d8caa6a7a3382c07b2436398

taskcluster/ci/beetmover/kind.yml

@@ -16,3 +16,5 @@ only-for-attributes:
 
 not-for-build-platforms:
    - macosx64-nightly/opt
+   - win32-nightly/opt
+   - win64-nightly/opt

taskcluster/ci/build-signing/kind.yml

@@ -11,7 +11,3 @@ transforms:
 
 kind-dependencies:
   - build
-
-not-for-build-platforms:
-   - win32-nightly/opt
-   - win64-nightly/opt