Remove un-used import statements

src/main/java/com/cleverthis/interview/DumbBruteSolver.java

@@ -1,9 +1,7 @@
 package com.cleverthis.interview;
 
 import java.util.Arrays;
-import java.util.Collection;
 import java.util.Collections;
-import java.util.List;
 import java.util.stream.Stream;
 
 /**

src/main/java/com/cleverthis/interview/WriteAwareBruteSolver.java

@@ -1,8 +1,6 @@
 package com.cleverthis.interview;
 
-import java.util.Iterator;
 import java.util.TreeSet;
-import org.apache.commons.text.similarity.LevenshteinDistance;
 
 /**
  * This is a write-aware brute solver implementation that uses the levenshtein distance to sort passcode permutations

src/test/java/com/cleverthis/interview/PerformanceAnalyze.java

@@ -1,7 +1,5 @@
 package com.cleverthis.interview;
 
-import com.cleverthis.interview.padlock.PadlockImpl;
-
 /**
  * Performance test but not mean to run in unit test.
  */

src/test/java/com/cleverthis/interview/SolutionTestBase.java

@@ -1,6 +1,5 @@
 package com.cleverthis.interview;
 
-import com.cleverthis.interview.padlock.PadlockImpl;
 import org.junit.jupiter.api.Test;
 
 import static org.junit.jupiter.api.Assertions.assertTrue;