Revert "build: harden GitHub workflow permissions"

This reverts commit 008e9a335dc32c4662aa56eb67487ddd777f2147.

We now have the full CI backported to openwrt-22.03. We need to revert
this subset and apply the full backport commit.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>

.github/workflows/formal.yml

@@ -3,9 +3,6 @@ name: Test Formalities
 on:
   pull_request:
 
-permissions:
-  contents: read
-
 jobs:
   build:
     name: Test Formalities

.github/workflows/labeler.yml

@@ -2,15 +2,8 @@ name: 'Pull Request Labeler'
 on:
   - pull_request_target
 
-permissions:
-  contents: read
-
 jobs:
   labeler:
-    permissions:
-      contents: read # to determine modified files (actions/labeler)
-      pull-requests: write # to add labels to PRs (actions/labeler)
-
     name: Pull Request Labeler
     runs-on: ubuntu-latest
     steps:

.github/workflows/tools.yml

@@ -10,9 +10,6 @@ on:
       - 'tools/**'
       - '.github/workflows/tools.yml'
 
-permissions:
-  contents: read
-
 jobs:
   build-macos-latest:
     if: github.event_name != 'push'