tests/docker: remove unnecessary filtering of $(DOCKER_IMAGES)

Now that DOCKER_IMAGES is only defined after DOCKER_VIRTUAL_IMAGES is
complete, there is no need to re-filter DOCKER_IMAGES against it.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220401141326.1244422-7-pbonzini@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220419091020.3008144-10-alex.bennee@linaro.org>

tests/docker/Makefile.include

@@ -201,7 +201,7 @@ __TESTS := $(notdir $(shell find $(SRC_PATH)/tests/docker/ -name 'test-*' -type
 DOCKER_TESTS := $(if $(TESTS), $(filter $(TESTS), $(__TESTS)), $(__TESTS))
 
 # Expand all the pre-requistes for each docker image and test combination
-$(foreach i,$(filter-out $(DOCKER_PARTIAL_IMAGES) $(DOCKER_VIRTUAL_IMAGES),$(DOCKER_IMAGES)), \
+$(foreach i,$(filter-out $(DOCKER_PARTIAL_IMAGES),$(DOCKER_IMAGES)), \
 	$(foreach t,$(DOCKER_TESTS), \
 		$(eval .PHONY: docker-$t@$i) \
 		$(eval docker-$t@$i: docker-image-$i docker-run-$t@$i) \