Revert "Add github action for creating releases (#671)"

This reverts commit cc2a4764bfbd929afb9bbebaf16daa950208cf1f.

.github/workflows/release.yml

diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
deleted file mode 100644
index e516d59..0000000
--- a/.github/workflows/release.yml
+++ /dev/null
@@ -1,38 +0,0 @@
-name: Release Binary Package
-on:
-  push:
-    branches:
-      - master
-    pull_request:
-
-jobs:
-  generate:
-    name: Create release-artifacts
-    runs-on: ubuntu-latest
-    steps:
-      - name: "Checkout the sources"
-        uses: actions/checkout@v2.3.1
-      - name: Install JDK 11
-        uses: actions/setup-java@v2
-        with:
-          distribution: "zulu"
-          java-version: "11"
-      - name: Setup Bazelisk
-        uses: bazelbuild/setup-bazelisk@v1
-      - name: Mount bazel cache
-        uses: actions/cache@v2
-        with:
-          path: "/home/runner/.cache/bazel"
-          key: caches-${{ runner.os }}-release
-      - name: Build release artifact
-        run: bazel build //:rules_kotlin_release
-      - name: Create release sha256
-        run: shasum -a 256 bazel-bin/rules_kotlin_release.tgz > bazel-bin/rules_kotlin_release.tgz.sha256
-      - name: Upload release artifact
-        uses: svenstaro/upload-release-action@2.2.1
-        with:
-          repo_token: ${{ secrets.GITHUB_TOKEN }}
-          file: bazel-bin/rules_kotlin_release.*
-          tag: ${{ github.ref }}
-          file_glob: true
-          overwrite: true