diff --git a/app/src/main/res/layout/activity_preferences.xml b/app/src/main/res/layout/activity_preferences.xml
index 00b72e0b74..eef88c7bad 100644
--- a/app/src/main/res/layout/activity_preferences.xml
+++ b/app/src/main/res/layout/activity_preferences.xml
@@ -34,7 +34,7 @@
         <FrameLayout
             android:id="@+id/frame_layout"
             android:layout_width="match_parent"
-            android:layout_height="wrap_content"></FrameLayout>
+            android:layout_height="wrap_content" />
 
     </ScrollView>
 
diff --git a/core/src/main/java/info/nightscout/androidaps/utils/DateUtil.java b/core/src/main/java/info/nightscout/androidaps/utils/DateUtil.java
index 46fac31626..256b5215de 100644
--- a/core/src/main/java/info/nightscout/androidaps/utils/DateUtil.java
+++ b/core/src/main/java/info/nightscout/androidaps/utils/DateUtil.java
@@ -42,12 +42,10 @@ import info.nightscout.androidaps.utils.resources.ResourceHelper;
 @Singleton
 public class DateUtil {
     private final Context context;
-    private final ResourceHelper resourceHelper;
 
     @Inject
-    public DateUtil(Context context, ResourceHelper resourceHelper) {
+    public DateUtil(Context context) {
         this.context = context;
-        this.resourceHelper = resourceHelper;
     }
 
     /**
@@ -193,10 +191,6 @@ public class DateUtil {
         return new DateTime(mills).toString(DateTimeFormat.forPattern(format));
     }
 
-    public static String timeFullString(long mills) {
-        return new DateTime(mills).toString(DateTimeFormat.fullTime());
-    }
-
     public String dateAndTimeString(Date date) {
         return dateString(date) + " " + timeString(date);
     }
@@ -279,10 +273,6 @@ public class DateUtil {
         return diff > T.mins(minutes).msecs();
     }
 
-    public static GregorianCalendar gregorianCalendar() {
-        return new GregorianCalendar();
-    }
-
     public static long getTimeZoneOffsetMs() {
         return new GregorianCalendar().getTimeZone().getRawOffset();
     }