f2fs: remove redunant invalidate compress pages

Compress page will invalidate in truncate block process too, so remove
redunant invalidate compress pages in f2fs_evict_inode.

Signed-off-by: Fengnan Chang <changfengnan@vivo.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>