sasDropOtherAssignment: drop superfluous assignment name when the name is already defined.
Description
this is happening in the DRG definitions for AHRQ comorbidities.
We have data like: "HTNDRG" 079,305 = "YES" I would like this to be
list(HTNDRG="079,305")
Usage
sasDropOtherAssignment(x)
Arguments
x
in this case is '079,305 = "YES"' (quotes may be present in the
string itself)