gerrit-verifications.yml: Remove FreeBSD_amd64 builds

In early September we asked on the public mailing list if there are
any users of the FreeBSD builds, and there was no response at all.

Let's disable the build testing on FreeBSD.  This will significantly
speed up our build testing, as well as pave the way for a more
comprehensive docker/containerization of build testing.

We're still extremely happy to merge any patches for support of
FreeBSD or other operating systems.  But the core Osmocom developers
will not perform related testing / porting.

Change-Id: I2c6d2a17c3cf9d8c78c3675995493e30cbc6be0d

jobs/gerrit-verifications.yml

@@ -23,8 +23,7 @@
 
     # in alphabetical order
     repos:
-      - asn1c:
-          slave_axis: !!python/tuple [linux_amd64_debian8, FreeBSD_amd64]
+      - asn1c
 
       - cellmgr-ng:
           concurrent: true
@@ -35,20 +34,12 @@
               -i -u build -v "$PWD:/build" -v "$HOME/bin:/build_bin" \
               osmocom:amd64 /build/contrib/jenkins.sh
 
-      - libasn1c:
-          slave_axis: !!python/tuple [linux_amd64_debian8, FreeBSD_amd64]
-
-      - libosmo-abis:
-          slave_axis: !!python/tuple [linux_amd64_debian8, FreeBSD_amd64]
-
-      - libosmo-netif:
-          slave_axis: !!python/tuple [linux_amd64_debian8, FreeBSD_amd64]
-
-      - libosmo-sccp:
-          slave_axis: !!python/tuple [linux_amd64_debian8, FreeBSD_amd64]
+      - libasn1c
+      - libosmo-abis
+      - libosmo-netif
+      - libosmo-sccp
 
       - libosmocore:
-          slave_axis: !!python/tuple [linux_amd64_debian8, FreeBSD_amd64]
           a1_name: arch
           a1: !!python/tuple [arm-none-eabi, amd64]
           combination_filter: '!(arch=="arm-none-eabi" && label=="FreeBSD_amd64")'
@@ -60,8 +51,7 @@
               ./contrib/jenkins.sh
             fi
 
-      - libsmpp34:
-          slave_axis: !!python/tuple [linux_amd64_debian8, FreeBSD_amd64]
+      - libsmpp34
 
       - openBSC:
           a1_name: SMPP
@@ -82,8 +72,7 @@
               -v "$HOME/bin:/build_bin" -v "$ARTIFACT_STORE:/artifact_store" \
               osmocom:amd64 /build/contrib/jenkins.sh
 
-      - openggsn:
-          slave_axis: !!python/tuple [linux_amd64_debian8, FreeBSD_amd64]
+      - openggsn
 
       - osmo-bsc:
           concurrent: true
@@ -110,9 +99,7 @@
             (FIRMWARE_VERSION == "origin/nrw/litecell15-next" && BTS_MODEL == "lc15")
           cmd: './contrib/jenkins_bts_model.sh "$BTS_MODEL"'
 
-      - osmo-ggsn:
-          slave_axis: !!python/tuple [linux_amd64_debian8, FreeBSD_amd64]
-
+      - osmo-ggsn
       - osmo-gsm-manuals
 
       - osmo-hlr:
@@ -146,8 +133,7 @@
               -v "$ARTIFACT_STORE:/artifact_store" \
               osmocom:amd64 /build/contrib/jenkins.sh
 
-      - osmo-pcap:
-          slave_axis: !!python/tuple [linux_amd64_debian8, FreeBSD_amd64]
+      - osmo-pcap
 
       - osmo-pcu:
           a1_name: FIRMWARE_VERSION