Remove SketchData.setName()

It was not used, and since it only updated the `name` attribute, but not
the corresponding `file` attribute, nor actually handled renaming actual
files, having this method around would actually be harmful, so just drop
it.

Author: matthijskooijman

arduino-core/src/processing/app/SketchData.java

@@ -248,10 +248,6 @@ public String getName() {
     return name;
   }
 
-  public void setName(String name) {
-    this.name = name;
-  }
-
   public void clearCodeDocs() {
     codes.clear();
   }