Apply suggestions from code review

Author: wxtim

cylc/flow/etc/tutorial/cylc-forecasting-workflow/bin/get-rainfall

@@ -163,10 +163,6 @@ def process_rainfall_data(filename, resolution, domain):
     _height, width = data.shape
 
     scale = get_scale(domain, width)
-    # TODO Fix Mercator - the new data is in a totally 
-    # different projection, transverse Mercator, rather
-    # than Mercator.
-    # offset = get_offset(domain, scale)
     offset = (-1100.8461538461539, 1400.6953225710452)
 
     if DEBUG:
@@ -202,7 +198,6 @@ def main():
     domain = util.parse_domain(os.environ['DOMAIN'])
 
     # Acts as a switch - if a file-name is given, use that file-name
-    # TODO - keep the nice S3 formatting with implied metadata
     canned_data = os.environ.get('CANNED_DATA', 'fetch')
 
     if canned_data == 'fetch':

cylc/flow/etc/tutorial/cylc-forecasting-workflow/flow.cylc

@@ -43,15 +43,6 @@
             # The area to generate forecasts for (lng1, lat1, lng2, lat2)
             DOMAIN = -12,46,12,61
 
-        [[[meta]]]
-            metadata source = Met Office Observations R&D
-            ellipsiod = "Airy 1830"
-            projection = "Transverse Mercator"
-            origin = "49,2"
-            SW = 43.8341,-12.0118
-            NW = 62.9207,-17.9739
-            NE = 62.6515,16.1289
-            SE = 437009,941578
 
     [[get_observations<station>]]
         script = get-observations