Bug#825715: kdepim: Drop obsolete build-depends on link-grammar

[Jeremy Bicha <jbicha@linux.com>]

Source: kdepim
Version: 4:4.14.10-2

kdepim no longer needs to build-depend on liblink-grammar4-dev (from
source: link-grammar).

See:

https://bugs.archlinux.org/task/42516

http://pkgs.fedoraproject.org/cgit/rpms/kdepim.git/commit/?id=cedfbb03568cbfde66926bbee3f4bbec2d2f69c1

This way, if someone later fixes https://bugs.debian.org/774088 and
updates link-grammar, abiword will be the only reverse-dependency in
Debian affected.

Thanks,
Jeremy

-- System Information:
Debian Release: stretch/sid
  APT prefers yakkety
  APT policy: (500, 'yakkety')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.4.0-23-generic (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
-- no debconf information