Commented out some warnings related to UndeterminableKineticsError.
Commented out some warnings related to UndeterminableKineticsError.

Now that we are using this to distinguish between forward and reverse
entries in the training set, we don't want to see all the messy details of
an UndeterminableKineticsError unless it is actually an error.

enochd/RMG-Py,chatelak/RMG-Py,faribas/RMG-Py,KEHANG/RMG-Py,comocheng/RMG-Py,nickvandewiele/RMG-Py,faribas/RMG-Py,nickvandewiele/RMG-Py,nyee/RMG-Py,comocheng/RMG-Py,pierrelb/RMG-Py,KEHANG/RMG-Py,nyee/RMG-Py,pierrelb/RMG-Py,enochd/RMG-Py,chatelak/RMG-Py