fix(bigquery): remove unused gax-grpc and grpc-api dependencies from pom.xml

Author: jinseopkim0

java-bigquery/google-cloud-bigquery/pom.xml

@@ -122,15 +122,6 @@
       <artifactId>arrow-memory-netty</artifactId>
     </dependency>
 
-    <dependency>
-      <groupId>com.google.api</groupId>
-      <artifactId>gax-grpc</artifactId>
-    </dependency>
-    <dependency>
-      <groupId>io.grpc</groupId>
-      <artifactId>grpc-api</artifactId>
-    </dependency>
-
     <dependency>
       <groupId>com.google.errorprone</groupId>
       <artifactId>error_prone_annotations</artifactId>