Simplify main call in some of the examples

Author: molinav

examples/fcstmaps.py

@@ -109,5 +109,4 @@ def main(date, verbose=True):
         dateobj = dt.datetime.strptime(sys.argv[1], "%Y%m%d")
     else:
         dateobj = dt.datetime.today()
-
-    sys.exit(main(dateobj, verbose=True))
+    main(dateobj, verbose=True)

examples/fcstmaps_axesgrid.py

@@ -123,5 +123,4 @@ def main(date, verbose=True):
         dateobj = dt.datetime.strptime(sys.argv[1], "%Y%m%d")
     else:
         dateobj = dt.datetime.today()
-
-    sys.exit(main(dateobj, verbose=True))
+    main(dateobj, verbose=True)

examples/plothighsandlows.py

@@ -105,6 +105,4 @@ def main():
 
 
 if __name__ == "__main__":
-
-    import sys
-    sys.exit(main())
+    main()