harbor no longer needs to skip go mod download

harbor vendors its go mods and there used to be a patch that changed files in the vendor directory. setting this flag was necessary to avoid losing the change since go mod download happened after patching. see aws/eks-distro#3008 for more info. I will send another PR adding a similar check to this repo to catch this kind of in the future automatically.

projects/goharbor/harbor/Makefile

@@ -47,7 +47,6 @@ SOURCE_PATTERNS=./core ./jobservice ./registryctl ./cmd/migrate-patch ./cmd/stan
 # harbor-core has additional ldflags
 BINARY_TARGET_FILES_BUILD_ALONE=harbor-core
 GO_MOD_PATHS=src src src src src src
-GO_MODS_VENDORED=true
 
 TRIVY_VERSION=$(TRIVYVERSION)
 IMAGE_BUILD_ARGS=TRIVY_VERSION