remove abt-io versions that used mochi-cfg

- still available in git, but not recommended for spack deployment

packages/mochi-abt-io/package.py

@@ -32,8 +32,6 @@ class MochiAbtIo(AutotoolsPackage):
     git = 'https://xgitlab.cels.anl.gov/sds/abt-io.git'
 
     version('0.5', tag='v0.5', preferred=True)
-    version('0.4.1', tag='v0.4.1')
-    version('0.4', tag='v0.4')
     version('0.3.1', tag='v0.3.1')
     version('0.3', tag='v0.3')
     version('0.2', tag='v0.2')
@@ -42,7 +40,6 @@ class MochiAbtIo(AutotoolsPackage):
     version('master', branch='master')
 
     depends_on('json-c', when='@0.5:')
-    depends_on('mochi-cfg@0.1:', when='@0.4:0.4.1')
     depends_on('argobots@1.0:')
     depends_on('autoconf@2.67:', type=("build"))
     depends_on('m4', type=("build"))