Remove src/main/resources from pom.xml, now that there are none.

storage/json-api/pom.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <parent>
     <artifactId>doc-samples</artifactId>
     <groupId>com.google.cloud</groupId>
@@ -19,14 +20,6 @@
   </properties>
 
   <build>
-    <resources>
-      <resource>
-        <directory>${basedir}/src/main/resources</directory>
-        <includes>
-          <include>**/*</include>
-        </includes>
-      </resource>
-    </resources>
     <finalName>${project.artifactId}-${project.version}</finalName>
   </build>
   <dependencies>
@@ -44,7 +37,6 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>4.10</version>
       <scope>test</scope>
     </dependency>
     <dependency>