remove unused import

Author: TheSnoozer

src/test/java/pl/project13/maven/git/GitSubmodulesTest.java

@@ -25,7 +25,6 @@
 import javax.annotation.Nonnull;
 import org.apache.maven.project.MavenProject;
 import org.junit.Test;
-import pl.project13.core.jgit.DescribeCommand;
 
 /**
  * Testcases to verify that the git-commit-id-plugin works properly.