chore: remove firestore artman configs from gen

These artman configs were accidentally replaced via my
poorly rebased CL. These API versions are on microgen.

Change-Id: I05b3564c881079ab0efd81fbb53a2163d37a70d4
Reviewed-on: https://code-review.googlesource.com/c/gocloud/+/49710
Reviewed-by: Cody Oss <codyoss@google.com>
Reviewed-by: kokoro <noreply+kokoro@google.com>
diff --git a/internal/gapicgen/generator/config.go b/internal/gapicgen/generator/config.go
index a49fb7c..2703d22 100644
--- a/internal/gapicgen/generator/config.go
+++ b/internal/gapicgen/generator/config.go
@@ -428,8 +428,6 @@
 	"google/cloud/videointelligence/artman_videointelligence_v1beta2.yaml",
 	"google/cloud/vision/artman_vision_v1p1beta1.yaml",
 	"google/devtools/containeranalysis/artman_containeranalysis_v1beta1.yaml",
-	"google/firestore/artman_firestore_v1.yaml",
-	"google/firestore/admin/artman_firestore_v1.yaml",
 	"google/logging/artman_logging.yaml",
 	"google/longrunning/artman_longrunning.yaml",
 	"google/monitoring/artman_monitoring.yaml",