Remove EC_GROUP_set_point_conversion_form

All serialization functions take point format as input, and
asn1_form is never used.

Change-Id: Ib1ede692e815ac0c929e3b589c3a5869adb0dc8b
Reviewed-on: https://boringssl-review.googlesource.com/2511
Reviewed-by: Adam Langley <agl@google.com>
4 files changed