chore: Revert "fix: Ensure proper errors are reported when authentication fa… (#325)

…ils (#318)"

This reverts commit 0165e0c from #318
since we started seeing failures on CI

Author: kabir

client/base/pom.xml

@@ -48,11 +48,6 @@
             <groupId>${project.groupId}</groupId>
             <artifactId>a2a-java-sdk-spec</artifactId>
         </dependency>
-        <dependency>
-            <groupId>${project.groupId}</groupId>
-            <artifactId>a2a-java-sdk-spec-grpc</artifactId>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-api</artifactId>
@@ -69,16 +64,6 @@
             <artifactId>slf4j-jdk14</artifactId>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>io.grpc</groupId>
-            <artifactId>grpc-testing</artifactId>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>io.grpc</groupId>
-            <artifactId>grpc-inprocess</artifactId>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
 </project>