env.sh: cleanup unused RELEASE_IMAGE_REPO (#6855)

Signed-off-by: Xiaodong Ye <xiaodong.ye@mthreads.com>

scripts/env.sh

@@ -5,7 +5,6 @@ export GOFLAGS="'-ldflags=-w -s \"-X=github.com/ollama/ollama/version.Version=$V
 # TODO - consider `docker buildx ls --format=json` to autodiscover platform capability
 PLATFORM=${PLATFORM:-"linux/arm64,linux/amd64"}
 DOCKER_ORG=${DOCKER_ORG:-"ollama"}
-RELEASE_IMAGE_REPO=${RELEASE_IMAGE_REPO:-"${DOCKER_ORG}/release"}
 FINAL_IMAGE_REPO=${FINAL_IMAGE_REPO:-"${DOCKER_ORG}/ollama"}
 OLLAMA_COMMON_BUILD_ARGS="--build-arg=VERSION \
     --build-arg=GOFLAGS \