Remove use of deprecated ListMatch
Remove use of deprecated ListMatch

This class was broken with pyphosphor aea38c65.  Drop use of the
class altogether and just use a lambda.

Change-Id: I6f36487c1d6fe2003aa007c2a174fe97abf0267a
Tested: Enumerated HTTP root and verified content
Signed-off-by: Brad Bishop <713d098c0be4c8fd2bf36a94cd08699466677ecd@fuzziesquirrel.com>

openbmc/phosphor-rest-server,openbmc/phosphor-rest-server