chore: migrate iot to the Java microgenerator

Committer: @miraleung
PiperOrigin-RevId: 345493287

google/cloud/iot/v1/BUILD.bazel

@@ -39,12 +39,13 @@ proto_library_with_info(
 
 ##############################################################################
 # Java
+# DO NOT OVERRIDE this Java microgenerator section with autogenerated rules.
 ##############################################################################
 load(
     "@com_google_googleapis_imports//:imports.bzl",
-    "java_gapic_assembly_gradle_pkg",
-    "java_gapic_library",
-    "java_gapic_test",
+    java_gapic_assembly_gradle_pkg = "java_gapic_assembly_gradle_pkg2",
+    java_gapic_library = "java_gapic_library2",
+    java_gapic_test = "java_gapic_test2",
     "java_grpc_library",
     "java_proto_library",
 )
@@ -62,11 +63,9 @@ java_grpc_library(
 
 java_gapic_library(
     name = "iot_java_gapic",
-    src = ":iot_proto_with_info",
-    gapic_yaml = "cloudiot_gapic.yaml",
+    srcs = [":iot_proto_with_info"],
     grpc_service_config = "cloudiot_grpc_service_config.json",
     package = "google.cloud.iot.v1",
-    service_yaml = "cloudiot_v1.yaml",
     test_deps = [
         ":iot_java_grpc",
         "//google/iam/v1:iam_java_grpc",

google/cloud/iot/v1/cloudiot_gapic.yaml

@@ -2,8 +2,6 @@ type: com.google.api.codegen.ConfigProto
 config_schema_version: 2.0.0
 # The settings of generated code in a specific language.
 language_settings:
-  java:
-    package_name: com.google.cloud.iot.v1
   python:
     package_name: google.cloud.iot_v1.gapic
   go: