Remove unused imports

Author: marcospassos

Diff for: src/main/java/com/marcospassos/phpserializer/Writer.java

@@ -2,9 +2,7 @@
 package com.marcospassos.phpserializer;
 
 import java.lang.reflect.Modifier;
-import java.util.function.Consumer;
 import com.marcospassos.phpserializer.state.FinishedState;
-import com.marcospassos.phpserializer.state.WritingSerializableObjectState;
 import com.marcospassos.phpserializer.state.WritingValueState;
 
 /**

Diff for: src/test/java/com/marcospassos/phpserializer/state/WritingSerializableObjectStateTest.java

@@ -6,7 +6,6 @@
 
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertSame;
-import static org.junit.Assert.assertTrue;
 import static org.mockito.Mockito.mock;
 
 /**