Clean up comment for nThresholds reflecting changes

src/main/java/com/conveyal/analysis/results/GridResultWriter.java

@@ -50,12 +50,10 @@ public class GridResultWriter extends BaseResultWriter {
     private static final long HEADER_LENGTH_BYTES = 9 * Integer.BYTES;
 
     /**
-     * The number of thresholds (time or cumulative access) being applied when computing values for each origin.
-     * The number of values stored per origin cell in an accessibility results grid.
-     * Note that we're storing only the number of different thresholds, but not the values themselves in the file.
-     * This means that the files can only be properly interpreted with the metadata from the regional analysis.
-     * This is an intentional choice to avoid changing the file format, and in any case these files are not expected
-     * to ever be used separately from an environment where the metadata is available.
+     * The number of thresholds (time or cumulative access) stored in the grid and used for computing values per origin.
+     *
+     * Note: Only the number of thresholds is stored, not their values. Proper interpretation requires threshold values
+     * from the regional analysis. Storing values would require a file format change.
      */
     private final int nThresholds;