Fix or remove broken function

[marianheil]

Follow up on f7ba0fc

pyHepGrid/src/pyHepGrid/src/runcard_parsing.py

Lines 128 to 141 in ec9df4b

	def _check_numeric(self):
	""" Asserts that runcard elements that need to be numeric indeed are """
	# FIXME runcard_linecode is not specified.
	# Where is it coming from? What is this doing?
	# This complete functio is never called. Can it go?
	for i in numeric_ids:
	try:
	float(self.runcard_dict[runcard_linecode[i]]) # noqa
	except BaseException:
	self.critical("Line {0} [{1}] should be numeric type. "
	"Value is instead {2}.".format(
	i, runcard_linecode[i], # noqa
	self.runcard_dict[runcard_linecode[i]])) # noqa
	print(self.logger)

Is broken (runcard_linecode is undefined) and never called. @jcwhitehead do you know what's going on? Can we remove the function?

[jcwhitehead]

Hangover from previous version - fine to remove. I'll fix it later today if you don't get around to it first!