Remove Guava depend

pom.xml

@@ -176,12 +176,6 @@
             <version>1.18.30</version>
             <scope>provided</scope>
         </dependency>
-        <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-            <version>32.1.3-jre</version>
-            <scope>compile</scope>
-        </dependency>
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>

src/main/java/me/braydon/feather/data/Document.java

@@ -16,7 +16,6 @@ import me.braydon.feather.common.FieldUtils;
 import me.braydon.feather.common.Tuple;
 import me.braydon.feather.database.IDatabase;
 
-import javax.annotation.concurrent.ThreadSafe;
 import java.util.Collections;
 import java.util.LinkedHashMap;
 import java.util.Map;
@@ -31,7 +30,7 @@ import java.util.UUID;
  * @author Braydon
  * @param <V> the type of value this document holds
  */
-@ThreadSafe @Getter @ToString
+@Getter @ToString
 public class Document<V> {
     /**
      * The key to use for the id field.