Remove unneeded dependency.

pom.xml

@@ -114,11 +114,6 @@
       <artifactId>hamcrest-all</artifactId>
       <version>1.3</version>
     </dependency>
-    <dependency>
-      <groupId>org.leumasjaffe</groupId>
-      <artifactId>container</artifactId>
-      <version>0.3.0</version>
-    </dependency>
     <dependency>
       <groupId>org.junit.platform</groupId>
       <artifactId>junit-platform-runner</artifactId>