remove unused subs_(un)subscribe_user functions
remove unused subs_(un)subscribe_user functions

chimo/social,studio666/gnu-social,charnimda/lgbtpzn-social,Piratas/tortuga,csarven/statusnet,bankonme/gnu-social,xebia/statusnet-oauth2,faulteh/gnu-social,xebia/statusnet-oauth2,sikevux/bsk-social,UngPirat/freesocial,zh/statusnet,faulteh/gnu-social,csarven/statusnet,eXcomm/gnu-social,eXcomm/gnu-social,sikevux/bsk-social,charnimda/lgbtpzn-social,charlycoste/StatusNet,eXcomm/gnu-social,chimo/social,csarven/statusnet,bankonme/gnu-social,zcopley/zcopleys-statusnet-clone,foocorp/gnu-social,studio666/gnu-social,furtherfield/gnu-social,charlycoste/StatusNet,UngPirat/freesocial,minmb/statusnet,chimo/social,faulteh/gnu-social,zcopley/StatusNet,shashi/StatusNet,foocorp/gnu-social,znarf/statusnet-ladistribution,d3vgru/StatusNet,furtherfield/gnu-social,znarf/statusnet-ladistribution,Piratas/tortuga,gnusocial/mainline,Piratas/tortuga,studio666/gnu-social,zcopley/zcopleys-statusnet-clone,brion/StatusNet,zcopley/zcopleys-statusnet-clone,minmb/statusnet,faulteh/gnu-social,d3vgru/StatusNet,sikevux/bsk-social,shashi/StatusNet,charnimda/lgbtpzn-social,eXcomm/gnu-social,foocorp/gnu-social,zcopley/StatusNet,charlycoste/StatusNet,minmb/statusnet,bankonme/gnu-social,brion/StatusNet,gnusocial/mainline,d3vgru/StatusNet,zcopley/StatusNet,sikevux/bsk-social,shashi/StatusNet,zh/statusnet,Piratas/tortuga,gnusocial/mainline,brion/StatusNet,UngPirat/freesocial,furtherfield/gnu-social,gnusocial/mainline,studio666/gnu-social,znarf/statusnet-ladistribution,bankonme/gnu-social,zh/statusnet,csarven/statusnet,xebia/statusnet-oauth2,furtherfield/gnu-social