Turn off reducedgrid in the EnKF

The reducedgrid feature no longer results in
reduced runtime for the current EnKF configuration.
This feature also cannot be used in soil DA due to
masked fields. It will be set to .false. by
default.

Resolves NOAA-EMC#2455

scripts/exgdas_enkf_update.sh

@@ -69,7 +69,7 @@ corrlength=${corrlength:-1250}
 lnsigcutoff=${lnsigcutoff:-2.5}
 analpertwt=${analpertwt:-0.85}
 readin_localization_enkf=${readin_localization_enkf:-".true."}
-reducedgrid=${reducedgrid:-".true."}
+reducedgrid=${reducedgrid:-".false."}
 letkf_flag=${letkf_flag:-".false."}
 getkf=${getkf:-".false."}
 denkf=${denkf:-".false."}