Use dependencies in deploy stage

* Overwrite before_script in deploy stage
* Remove artifacts from deploy stage
6 jobs for feature/gitlab-ci in 23 minutes and 40 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed #190
run unit tests

00:08:11

 
  Build
passed #191
linux:amd64

00:14:54

passed #194
linux:arm:7

00:15:28

passed #193
windows:386

00:14:55

passed #192
windows:amd64

00:14:33

 
  Deploy
manual #195
allowed to fail manual
deploy artifacts to bintray