l10n: git.pot: v2.20.0 round 2 (2 new, 2 removed)

Generate po/git.pot from v2.20.0-rc1-10-g7068cbc4ab for git v2.20.0 l10n
round 2.

Signed-off-by: Jiang Xin <[email protected]>

Author: jiangxin