[ignore] remove unused imports

Author: alanpaxton

exist-core/src/main/java/org/exist/util/Str.java

@@ -1,9 +1,5 @@
 package org.exist.util;
 
-import com.github.benmanes.caffeine.cache.Cache;
-import com.github.benmanes.caffeine.cache.Caffeine;
-import com.github.benmanes.caffeine.cache.stats.CacheStats;
-
 /**
  * "Fast" string which uses "fingerprinting"
  * to make both equality comparison, and string ordering efficient for