debian: Drop --no-install-recommends from apt-get command line

We already disabled installation of recommended packages in
/etc/apt/apt.conf.
29 jobs for deb-tweaks in 26 minutes and 8 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Bootstrapping
passed #213277
bootstrap

00:16:51

 
  Arch Container Build
passed #213278
arch@container-build

00:01:38

passed #213279
arch-forced@container-ifnot-exists

00:01:38

 
  Arch Check
passed #213280
arch@check

00:00:41

passed #213282
arch@container-ifnot-exists

00:00:44

passed #213281
arch-forced-ifnot-exists@check

00:00:40

 
  Ubuntu Container Build
passed #213285
ubuntu:18.04@container-build

00:01:04

passed #213283
ubuntu:18.10@container-build

00:01:04

passed #213284
ubuntu-forced:18.10@container-ifnot-exists

00:01:11

 
  Ubuntu Check
passed #213289
ubuntu:18.04@check

00:00:19

passed #213286
ubuntu:18.10@check

00:00:19

passed #213288
ubuntu:18.10@container-ifnot-exists

00:00:18

passed #213287
ubuntu:forced-ifnot-exists@check

00:00:16

 
  Debian Container Build
passed #213292
debian:buster@container-build

00:00:53

passed #213291
debian-forced:stretch@container-ifnot-exists

00:01:10

passed #213290
debian:stretch@container-build

00:01:05

 
  Debian Check
passed #213296
debian:buster@check

00:00:14

passed #213294
debian:forced-ifnot-exists@check

00:00:33

passed #213293
debian:stretch@check

00:00:15

passed #213295
debian:stretch@container-ifnot-exists

00:00:13

 
  Fedora Container Build
passed #213297
fedora:29@container-build

00:02:03

passed #213299
fedora-forced:rawhide@container-ifnot-exists

00:01:35

passed #213298
fedora:rawhide@container-build

00:02:11

 
  Fedora Check
passed #213300
fedora:29@check

00:00:19

passed #213304
fedora:29-upstream@container-ifnot-exists

00:00:57

passed #213302
fedora-forced-ifnot-exists:rawhide@check

00:00:26

passed #213301
fedora:rawhide@check

00:00:27

passed #213303
fedora:rawhide@container-ifnot-exists

00:00:24

 
  Container Push
passed #213305
bootstrap-push@push

00:00:28