PBAP: Remove BODY header from PSE's response to PB size request

Modified the code so that PSE will not respond with a
Body header when being asked for the size of Phonebook
with max list count set to 0.

Change-Id: Ib297bd5fe18179a390e3d2b223fb898a6c50ba57
CRs-Fixed: 554222
(cherry picked from commit e0599842a75517b7ef29e1517741760022a9e5ac)
(cherry picked from commit 6763b280ad03a10428321cd5c176063b8fd2686a)
(cherry picked from commit 34f1f17e1ff9bec5b7de93ecd16b91bf0cea2c5b)