Cleanup samples (#544)

* Inherit plugin versions from parent pom

* Remove GooglePlus Sample as the service is going away

* Upgrade findbugs-maven-plugin to fix tests

Author: chingor13

google-http-client-findbugs/google-http-client-findbugs-test/pom.xml

@@ -32,7 +32,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>findbugs-maven-plugin</artifactId>
-        <version>2.5.2</version>
+        <version>3.0.5</version>
         <configuration>
           <plugins>
             <plugin>

pom.xml

@@ -73,7 +73,6 @@
     <module>google-http-client-findbugs</module>
     <module>google-http-client-test</module>
     <module>samples/dailymotion-simple-cmdline-sample</module>
-    <module>samples/googleplus-simple-cmdline-sample</module>
 
     <!-- A deployable artifact must be last or deploys are skipped -->
     <module>google-http-client-bom</module>
@@ -367,7 +366,7 @@
         <plugin>
           <groupId>org.codehaus.mojo</groupId>
           <artifactId>findbugs-maven-plugin</artifactId>
-          <version>2.5.2</version>
+          <version>3.0.5</version>
         </plugin>
         <plugin>
           <groupId>org.codehaus.mojo</groupId>

samples/dailymotion-simple-cmdline-sample/pom.xml

@@ -52,7 +52,6 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>findbugs-maven-plugin</artifactId>
-        <version>2.3.2</version>
         <configuration>
           <excludeFilterFile>../../findbugs-exclude.xml</excludeFilterFile>
           <failOnError>false</failOnError>
@@ -68,15 +67,13 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-deploy-plugin</artifactId>
-        <version>2.5</version>
         <configuration>
           <skip>true</skip>
         </configuration>
       </plugin>
       <plugin>
         <groupId>org.sonatype.plugins</groupId>
         <artifactId>nexus-staging-maven-plugin</artifactId>
-        <version>1.6.6</version>
         <configuration>
           <skipNexusStagingDeployMojo>true</skipNexusStagingDeployMojo>
         </configuration>