Revert "building feos-nginx package"

This reverts commit 88b1f67.

Author: guvenc

.github/workflows/nginx-container.yaml

@@ -24,8 +24,3 @@ include hack/hack.mk
 
 cli:
 	cargo build --package feos-cli --release
-
-nginx: uki
-	@echo "Building nginx container with FeOS UKI..."
-	docker build -f hack/Dockerfile.nginx -t feos-nginx .
-	@echo "Built feos-nginx container successfully"