docs(sample): remove unused native-image-support dependency (#1103)

* docs(sample): remove unused dependency

* remove ProtobufMessageFeature

Author: mpeddada1

samples/native-image-sample/pom.xml

@@ -104,11 +104,6 @@ http://maven.apache.org/xsd/maven-4.0.0.xsd">
       <id>native</id>
 
       <dependencies>
-        <dependency>
-          <groupId>com.google.cloud</groupId>
-          <artifactId>native-image-support</artifactId>
-          <version>0.13.1</version>
-        </dependency>
         <dependency>
           <groupId>org.junit.vintage</groupId>
           <artifactId>junit-vintage-engine</artifactId>
@@ -147,7 +142,6 @@ http://maven.apache.org/xsd/maven-4.0.0.xsd">
               <buildArgs>
                 <buildArg>--no-fallback</buildArg>
                 <buildArg>--no-server</buildArg>
-                <buildArg>--features=com.google.cloud.nativeimage.features.ProtobufMessageFeature</buildArg>
               </buildArgs>
             </configuration>
             <executions>