Use default buildkitd flags (docker/setup-buildx-action#15)

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

.github/workflows/ci.yml

@@ -38,7 +38,6 @@ jobs:
         with:
           version: ${{ matrix.buildx-version }}
           driver-opts: network=host
-          buildkitd-flags: --allow-insecure-entitlement security.insecure
       -
         name: Build and push
         id: docker_build
@@ -94,7 +93,6 @@ jobs:
         with:
           version: ${{ matrix.buildx-version }}
           driver-opts: network=host
-          buildkitd-flags: --allow-insecure-entitlement security.insecure
       -
         name: Build and push
         id: docker_build
@@ -151,7 +149,6 @@ jobs:
         with:
           version: ${{ matrix.buildx-version }}
           driver-opts: network=host
-          buildkitd-flags: --allow-insecure-entitlement security.insecure
       -
         name: Build and push
         id: docker_build
@@ -199,7 +196,6 @@ jobs:
         uses: docker/setup-buildx-action@master
         with:
           driver-opts: network=host
-          buildkitd-flags: --allow-insecure-entitlement security.insecure
       -
         name: Cache Docker layers
         uses: actions/cache@v2