Revert "#1990 Ignores GPS positions with 0/0 latitude and longitude values."

This reverts commit 55b20c75c0.

src/main/java/io/github/dsheirer/module/decode/event/PlottableDecodeEvent.java

@@ -62,16 +62,6 @@ public class PlottableDecodeEvent extends DecodeEvent
         return mGeoPosition;
     }
 
-    /**
-     * Indicates if the location is non-null and either latitude or longitude is not at the zero axis.  If the location
-     * coordinates are zero or both are very small values close to zero, then the location is flagged as invalid.
-     */
-    public boolean isValidLocation()
-    {
-        return mGeoPosition != null &&
-                ((Math.abs(mGeoPosition.getLatitude()) > 0.01) || (Math.abs(mGeoPosition.getLongitude()) > 0.01));
-    }
-
     /**
      * Sets the heading for the mobile plottable event
      * @param heading