cleanup imports

Author: uschindler

src/main/java/de/thetaphi/forbiddenapis/Signatures.java

@@ -37,7 +37,6 @@
 import java.util.Locale;
 import java.util.Map;
 import java.util.NavigableSet;
-import java.util.Objects;
 import java.util.Set;
 import java.util.TreeSet;
 import java.util.regex.Matcher;