setup: remove fedora22

Machines do not appear in https://ci.nodejs.org/computer, or in
`ansible/inventory.yml`.

PR-URL: #1063
Reviewed-By: Rod Vagg <[email protected]>
Refs: #579
Refs: #688

Author: maclover7

setup/ansible-inventory

@@ -1,6 +1,3 @@
-[iojs-build-fedora22]
-iojs-build-fedora22-1
-
 [iojs-build-centos7]
 test-digitalocean-centos7-x64-1
 test-softlayer-centos7-x64-1
@@ -129,8 +126,6 @@ iojs-armv7-wheezy
 iojs-build-centos7
 iojs-build-centos6
 iojs-build-centos5
-iojs-build-fedora21
-iojs-build-fedora22
 
 [iojs-smartos:children]
 iojs-build-smartos