chore: migrate firestore/admin to the Java microgenerator

Committer: @miraleung
PiperOrigin-RevId: 346387604

google/firestore/admin/v1/BUILD.bazel

@@ -41,15 +41,14 @@ proto_library_with_info(
 
 ##############################################################################
 # Java
-# DO NOT OVERRIDE with autogenerated rules if NOT migrated to Java Microgen
 ##############################################################################
 load(
     "@com_google_googleapis_imports//:imports.bzl",
+    "java_gapic_assembly_gradle_pkg",
+    "java_gapic_library",
+    "java_gapic_test",
     "java_grpc_library",
     "java_proto_library",
-    java_gapic_assembly_gradle_pkg = "java_gapic_assembly_gradle_pkg_legacy",
-    java_gapic_library = "java_gapic_library_legacy",
-    java_gapic_test = "java_gapic_test_legacy",
 )
 
 java_proto_library(
@@ -65,11 +64,10 @@ java_grpc_library(
 
 java_gapic_library(
     name = "admin_java_gapic",
-    src = ":admin_proto_with_info",
+    srcs = [":admin_proto_with_info"],
     gapic_yaml = "firestore_gapic.yaml",
     grpc_service_config = "firestore_admin_grpc_service_config.json",
     package = "google.firestore.admin.v1",
-    service_yaml = "//google/firestore/admin:firestore_admin_v1.yaml",
     test_deps = [
         ":admin_java_grpc",
     ],