Issue:
Not able to unselect none option in past obesteric history in history section

Steps to reproduce
Login to mmu web application
register a female benificiary
proceede with nurse
Go to history section and click on past obesteric histoy
click on checkbox -none and try unselecting it

Expected behaviour:
It should allow to unselect none check box
Actual result
It is not alloawing to unselect none checkbox