build: remove exceptional minor logic (#25535)

We no longer have an exceptional minor and can remove the logic we put
in place given the release tool not supporting exceptional minors well
yet.

(cherry picked from commit 757140a)

Author: devversion

.ng-dev/pull-request.mts

@@ -16,8 +16,4 @@ export const pullRequest: PullRequestConfig = {
   mergeReadyLabel: 'merge ready',
   commitMessageFixupLabel: 'commit message fixup',
   caretakerNoteLabel: 'caretaker note',
-
-  // TODO(EXCEPTIONAL_MINOR): Remove this when v15 moves into RC / or when exceptional
-  // minors are supported.
-  __specialTreatRcAsExceptionalMinor: true,
 };

scripts/docs-deploy/deploy-ci-push.mts

@@ -31,10 +31,7 @@ async function main() {
   if (branchName === active.next.branchName) {
     const major = active.next.version.major;
 
-    const targets = [
-      // TODO(EXCEPTIONAL_MINOR): Restore the original logic for `next.material.angular.io`.
-      // {projectId, description, site: sites.next}
-    ];
+    const targets = [{projectId, description, site: sites.next}];
 
     // If the next release train is for a new major that is not published as part of the
     // other active release trains, we also publish to e.g. `v14.material.angular.io`.
@@ -72,11 +69,7 @@ async function main() {
 
   if (branchName === active.releaseCandidate?.branchName) {
     const major = active.releaseCandidate.version.major;
-    const targets = [
-      // TODO(EXCEPTIONAL_MINOR): Restore the original logic for `next.material.angular.io`.
-      {projectId, description, site: sites.next},
-      {projectId, description, site: sites.rc},
-    ];
+    const targets = [{projectId, description, site: sites.rc}];
 
     // If the RC is for a new major that `latest` does not publish yet, we will deploy
     // the dedicated major site like `v13.material.angular.io` using the `rc` branch.