Revert "Add pk_rsa_set_padding() and rsa_set_padding()"

This reverts commit b4fae579e8fd72b5e57864d28b5b2c07bad5ce27.

Conflicts:
	library/pk.c
	tests/suites/test_suite_pk.data
	tests/suites/test_suite_pk.function
Updated ChangeLog with deterministic ECDSA
Ready for release 1.3.4
Fixed up ChangeLog with missing bug fixes