Remove unused import

Author: tchristofferson

src/test/java/com/tchristofferson/configupdater/ConfigUpdaterTest.java

@@ -19,7 +19,6 @@
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.Arrays;
-import java.util.Collections;
 import java.util.List;
 
 import static org.junit.Assert.*;