refactor!: remove v1alpha2 library (#1003)

* refactor: remove v1alpha2 library

* clirr fix

* more clirr fix

* .

* other files

* bom

Author: yirutang

google-cloud-bigquerystorage-bom/pom.xml

@@ -60,11 +60,6 @@
 
   <dependencyManagement>
     <dependencies>
-      <dependency>
-        <groupId>com.google.api.grpc</groupId>
-        <artifactId>proto-google-cloud-bigquerystorage-v1alpha2</artifactId>
-        <version>0.118.2-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-bigquerystorage-v1alpha2:current} -->
-      </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-cloud-bigquerystorage-v1beta1</artifactId>
@@ -81,11 +76,6 @@
         <version>1.18.2-SNAPSHOT</version><!-- {x-version-update:proto-google-cloud-bigquerystorage-v1:current} -->
       </dependency>
 
-      <dependency>
-        <groupId>com.google.api.grpc</groupId>
-        <artifactId>grpc-google-cloud-bigquerystorage-v1alpha2</artifactId>
-        <version>0.118.2-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-bigquerystorage-v1alpha2:current} -->
-      </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-bigquerystorage-v1beta1</artifactId>

google-cloud-bigquerystorage/clirr-ignored-differences.xml

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- see http://www.mojohaus.org/clirr-maven-plugin/examples/ignored-differences.html -->
+<differences>
+    <!-- Allow below protobuf changes as non-breaking-->
+    <difference>
+        <differenceType>8001</differenceType>
+        <className>com/google/cloud/bigquery/storage/v1alpha2/*</className>
+    </difference>
+    <difference>
+        <differenceType>8001</differenceType>
+        <className>com/google/cloud/bigquery/storage/v1alpha2/stub/BigQueryWriteStub</className>
+    </difference>
+    <difference>
+        <differenceType>8001</differenceType>
+        <className>com/google/cloud/bigquery/storage/v1alpha2/stub/BigQueryWriteStubSettings</className>
+    </difference>
+    <difference>
+        <differenceType>8001</differenceType>
+        <className>com/google/cloud/bigquery/storage/v1alpha2/stub/BigQueryWriteStubSettings$Builder</className>
+    </difference>
+    <difference>
+        <differenceType>8001</differenceType>
+        <className>com/google/cloud/bigquery/storage/v1alpha2/stub/GrpcBigQueryWriteCallableFactory</className>
+    </difference>
+    <difference>
+        <differenceType>8001</differenceType>
+        <className>com/google/cloud/bigquery/storage/v1alpha2/stub/GrpcBigQueryWriteStub</className>
+    </difference>
+</differences>

google-cloud-bigquerystorage/pom.xml

@@ -72,10 +72,6 @@
       <artifactId>proto-google-common-protos</artifactId>
     </dependency>
 
-    <dependency>
-      <groupId>com.google.api.grpc</groupId>
-      <artifactId>proto-google-cloud-bigquerystorage-v1alpha2</artifactId>
-    </dependency>
     <dependency>
       <groupId>com.google.api.grpc</groupId>
       <artifactId>proto-google-cloud-bigquerystorage-v1beta1</artifactId>
@@ -162,11 +158,6 @@
       <artifactId>protobuf-java</artifactId>
     </dependency>
 
-    <dependency>
-      <groupId>com.google.api.grpc</groupId>
-      <artifactId>grpc-google-cloud-bigquerystorage-v1alpha2</artifactId>
-      <scope>test</scope>
-    </dependency>
     <dependency>
       <groupId>com.google.api.grpc</groupId>
       <artifactId>grpc-google-cloud-bigquerystorage-v1beta1</artifactId>