Remove unsupported build attestation params for single-arch builds (without buildx) (#686)

Signed-off-by: Shiva Krishna, Merla <smerla@nvidia.com>

Author: shivamerla

deployments/container/native-only.mk

@@ -13,9 +13,7 @@
 # limitations under the License.
 
 PUSH_ON_BUILD ?= false
-ATTACH_ATTESTATIONS ?= false
 DOCKER_BUILD_PLATFORM_OPTIONS ?= --platform=linux/amd64
-DOCKER_BUILD_OPTIONS = --output=type=image,push=$(PUSH_ON_BUILD) --provenance=$(ATTACH_ATTESTATIONS) --sbom=$(ATTACH_ATTESTATIONS)
 
 ifeq ($(PUSH_ON_BUILD),true)
 	$(DOCKER) push "$(IMAGE)"