Remove support for epiphany target

Update #3941.

config/rtems-bsps-epiphany.ini

@@ -1,25 +0,0 @@
-#
-# RTEMS Tools Project (http://www.rtems.org/)
-# Copyright 2017 Chris Johns (chrisj@rtems.org)
-# All rights reserved.
-#
-# This file is part of the RTEMS Tools package in 'rtems-bsp-builder'.
-#
-# Permission to use, copy, modify, and/or distribute this software for any
-# purpose with or without fee is hereby granted, provided that the above
-# copyright notice and this permission notice appear in all copies.
-#
-# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-
-#
-# Epiphany Architecture
-#
-[epiphany]
-bsps = epiphany_sim
-exclude = smp, network

config/rtems-bsps-tiers.ini

@@ -121,5 +121,4 @@ bsps_x86_64 = amd64
 # Tier 4: nothing expected.
 #
 [tier-4]
-archs = epiphany
+archs =
-bsps_epiphany = epiphany_sim

config/rtems-bsps.ini

@@ -62,7 +62,6 @@ include = rtems-bsps-tiers.ini
 [everything]
 archs = arm,
         bfin,
-        epiphany,
         i386,
         lm32,
         m68k,
@@ -77,7 +76,6 @@ archs = arm,
         v850
 bsps_arm = ${arm:bsps}
 bsps_bfin = ${bfin:bsps}
-bsps_epiphany = ${epiphany:bsps}
 bsps_i386 = ${i386:bsps}
 bsps_lm32 = ${lm32:bsps}
 bsps_m68k = ${m68k:bsps}
@@ -97,7 +95,6 @@ bsps_v850 = ${v850:bsps}
 [architectures]
 include = rtems-bsps-arm.ini,
           rtems-bsps-bfin.ini,
-          rtems-bsps-epiphany.ini,
           rtems-bsps-i386.ini,
           rtems-bsps-lm32.ini,
           rtems-bsps-m68k.ini,