fix: remove duplicated FACT_OPERATOR_REGISTRY constant

Author: Molter73

constants.mk

@@ -3,7 +3,6 @@ RUST_VERSION ?= stable
 FACT_TAG ?= $(shell git describe --always --tags --abbrev=10 --dirty)
 FACT_VERSION ?= $(FACT_TAG)
 FACT_REGISTRY ?= quay.io/stackrox-io/fact
-FACT_OPERATOR_REGISTRY ?= quay.io/stackrox-io/fact-operator
 FACT_IMAGE_NAME ?= $(FACT_REGISTRY):$(FACT_TAG)
 FACT_OPERATOR_REGISTRY ?= quay.io/stackrox-io/fact-operator
 FACT_OPERATOR_NAME ?= $(FACT_OPERATOR_REGISTRY):$(FACT_TAG)