Remove AVR port

closes #2443.

c/src/aclocal/check-networking.m4

@@ -8,7 +8,7 @@ AC_CACHE_CHECK([whether BSP supports networking],
   [dnl
     case "$RTEMS_CPU" in
     # do not have address space to hold BSD TCP/IP stack
-    avr*|m32c*)
+    m32c*)
       rtems_cv_HAS_NETWORKING="no"
       ;;
     *)

c/src/aclocal/rtems-cpu-subdirs.m4

@@ -10,7 +10,6 @@ AC_DEFUN([RTEMS_CPU_SUBDIRS],
 [
 ## EDIT: If adding a new cpu to RTEMS, add it to the case block below.
 case $RTEMS_CPU in
-_RTEMS_CPU_SUBDIR([arm],[$1]);;
 _RTEMS_CPU_SUBDIR([bfin],[$1]);;
 _RTEMS_CPU_SUBDIR([epiphany],[$1]);;
 _RTEMS_CPU_SUBDIR([avr],[$1]);;

c/src/lib/libbsp/avr/Makefile.am

@@ -1,9 +0,0 @@
-ACLOCAL_AMFLAGS = -I ../../../aclocal
-
-## Descend into the @RTEMS_BSP_FAMILY@ directory
-SUBDIRS = @RTEMS_BSP_FAMILY@
-
-EXTRA_DIST =
-
-include $(top_srcdir)/../../../automake/subdirs.am
-include $(top_srcdir)/../../../automake/local.am

c/src/lib/libbsp/avr/acinclude.m4

@@ -1,8 +0,0 @@
-# RTEMS_CHECK_BSPDIR(RTEMS_BSP_FAMILY)
-AC_DEFUN([RTEMS_CHECK_BSPDIR],
-[
-  case "$1" in
-  *)
-    AC_MSG_ERROR([Invalid BSP]);;
-  esac
-])