Revert "chore: add license headers (#190)"

This reverts commit 3bcb849.

Author: demolaf

.github/licenses/add-headers.sh

@@ -18,23 +18,6 @@ on:
         default: 'stable'
 
 jobs:
-  # Check license headers on all source files
-  check-license-header:
-    name: Check License Headers
-    runs-on: ubuntu-latest
-    timeout-minutes: 5
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Download addlicense
-        run: |
-          curl -sL https://github.com/google/addlicense/releases/download/v1.2.0/addlicense_v1.2.0_Linux_x86_64.tar.gz | tar xz -C /usr/local/bin addlicense
-          chmod +x /usr/local/bin/addlicense
-
-      - name: Check license headers
-        run: .github/licenses/check-headers.sh
-
   lint:
     name: Lint (Dart ${{ matrix.dart-version }})
     runs-on: ubuntu-latest
@@ -366,7 +349,7 @@ jobs:
   build:
     name: Build verification (Dart ${{ matrix.dart-version }})
     runs-on: ubuntu-latest
-    needs: [lint, test, test-integration, check-license-header]
+    needs: [lint, test, test-integration]
     # Run even if test-integration was skipped (fork PRs), but not if lint or test failed
     if: |
       always() &&
@@ -407,12 +390,5 @@ jobs:
         run: melos bootstrap
         working-directory: .
 
-      - name: Validate license headers
-        run: |
-          if [ "${{ needs.check-license-header.result }}" != "success" ]; then
-            echo "❌ License header check failed"
-            exit 1
-          fi
-
       - name: Verify package
         run: dart pub publish --dry-run

.github/licenses/check-headers.sh

@@ -186,7 +186,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright 2026 Google LLC
+   Copyright 2020 Invertase Limited
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.

.github/licenses/default.txt

@@ -1,18 +1,4 @@
 #!/bin/bash
-# Copyright 2026 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
 
 # Script to generate version.g.dart files for all packages
 # Finds all packages/*/pubspec.yaml files, extracts version, and writes to package/lib/version.g.dart