next round of review comments; through cam_history.F90

Author: peverwhee

.gitmodules

@@ -7,7 +7,7 @@
 [submodule "history"]
 	path = src/history/buffers
 	url = https://github.com/peverwhee/history_output
-	fxtag         = 44099b18b2dcbb80c1ed1755b6ef1cc7be028033
+	fxtag         = b1da47af645dea3b14c19efc0716dc6ce6c28d22
 	fxrequired    = AlwaysRequired
 	fxDONOTUSEurl = https://github.com/peverwhee/history_output
 [submodule "mpas"]

cime_config/buildnml

@@ -41,9 +41,6 @@ from atm_in_paramgen import AtmInParamGen
 # Open CIME case log:
 _LOGGER = logging.getLogger(__name__)
 
-# Beginning of valid user_nl configuration line
-_USER_NL_LINE = re.compile(r"^[a-z][a-z0-9_]*[ ]*=", re.IGNORECASE)
-
 #################
 #HELPER FUNCTIONS
 #################