cleanup

src/main/java/gov/usgs/earthquake/nshmp/model/Models.java

@@ -17,9 +17,6 @@ import java.util.function.Predicate;
 import java.util.stream.Collectors;
 import java.util.stream.IntStream;
 
-import com.google.gson.Gson;
-import com.google.gson.GsonBuilder;
-
 import gov.usgs.earthquake.nshmp.data.XySequence;
 import gov.usgs.earthquake.nshmp.geo.json.Feature;
 import gov.usgs.earthquake.nshmp.geo.json.FeatureCollection;
@@ -37,10 +34,6 @@ import gov.usgs.earthquake.nshmp.tree.LogicTree;
  */
 public class Models {
 
-  static final Gson GSON = new GsonBuilder()
-      .setPrettyPrinting()
-      .create();
-
   /**
    * Returns an object for JSON serialization with the name and ID of all source
    * logic tree groups in the supplied model organized by tectonic setting and
@@ -226,7 +219,7 @@ public class Models {
 
       /*
        * Map source tree into a logic tree of MFDs. Note that the mfdTree
-       * created below is actually a LogicGroup becuase a SourceTree may contain
+       * created below is actually a LogicGroup because a SourceTree may contain
        * null (do-nothing) branches such that weights do not sum to one.
        */
       LogicTree<Mfd> mfdTree = ModelTrees.toMfdTree(tree);