Remove cache from build steps, as they already use FROM

dendrite:buildcache
[skip ci]

Author: S7evinK

.github/workflows/docker.yml

@@ -81,7 +81,6 @@ jobs:
         id: docker_build_monolith_release
         uses: docker/build-push-action@v3
         with:
-          cache-from: type=registry,ref=ghcr.io/${{ env.GHCR_NAMESPACE }}/dendrite:buildcache
           context: .
           platforms: ${{ env.PLATFORMS }}
           push: true
@@ -138,7 +137,6 @@ jobs:
         id: docker_build_demo_pinecone
         uses: docker/build-push-action@v3
         with:
-          cache-from: type=registry,ref=ghcr.io/${{ env.GHCR_NAMESPACE }}/dendrite:buildcache
           context: .
           file: ./build/docker/Dockerfile.demo-pinecone
           platforms: ${{ env.PLATFORMS }}
@@ -152,7 +150,6 @@ jobs:
         id: docker_build_demo_pinecone_release
         uses: docker/build-push-action@v3
         with:
-          cache-from: type=registry,ref=ghcr.io/${{ env.GHCR_NAMESPACE }}/dendrite:buildcache
           context: .
           file: ./build/docker/Dockerfile.demo-pinecone
           platforms: ${{ env.PLATFORMS }}
@@ -198,7 +195,6 @@ jobs:
         id: docker_build_demo_yggdrasil
         uses: docker/build-push-action@v3
         with:
-          cache-from: type=registry,ref=ghcr.io/${{ env.GHCR_NAMESPACE }}/dendrite:buildcache
           context: .
           file: ./build/docker/Dockerfile.demo-yggdrasil
           platforms: ${{ env.PLATFORMS }}
@@ -212,7 +208,6 @@ jobs:
         id: docker_build_demo_yggdrasil_release
         uses: docker/build-push-action@v3
         with:
-          cache-from: type=registry,ref=ghcr.io/${{ env.GHCR_NAMESPACE }}/dendrite:buildcache
           context: .
           file: ./build/docker/Dockerfile.demo-yggdrasil
           platforms: ${{ env.PLATFORMS }}