remove obsolete SuperH support

We don't have a toolchain anymore, we don't have working original
kernel headers, and nobody is maintaining this so there is really
no point in keeping this here. Details of the patch:

- removed code paths from Android.mk files related to the SuperH
  architecture ("sh")

- removed libc/arch-sh, linker/arch-sh, libc/kernel/arch-sh

- simplified libc/SYSCALLS.TXT

- simplified the scripts in libc/tools/ and libc/kernel/tools

Change-Id: I26b0e1422bdc347489e4573e2fbec0e402f75560

Signed-off-by: David 'Digit' Turner <digit@android.com>
diff --git a/libc/tools/bionic_utils.py b/libc/tools/bionic_utils.py
index e7c8c2d..0bc947b 100644
--- a/libc/tools/bionic_utils.py
+++ b/libc/tools/bionic_utils.py
@@ -240,7 +240,6 @@
         if number == "stub":
             syscall_id  = -1
             syscall_id2 = -1
-            syscall_id3 = -1
         else:
             try:
                 if number[0] == '#':
@@ -248,12 +247,8 @@
                 numbers = string.split(number,',')
                 syscall_id  = int(numbers[0])
                 syscall_id2 = syscall_id
-                syscall_id3 = syscall_id
                 if len(numbers) > 1:
                     syscall_id2 = int(numbers[1])
-                    syscall_id3 = syscall_id2
-                if len(numbers) > 2:
-                    syscall_id3 = int(numbers[2])
             except:
                 E("invalid syscall number in '%s'" % line)
                 return
@@ -261,13 +256,12 @@
 		global verbose
         if verbose >= 2:
             if call_id < 0:
-                print "%s: %d,%d,%d" % (syscall_name, syscall_id, syscall_id2, syscall_id3)
+                print "%s: %d,%d" % (syscall_name, syscall_id, syscall_id2)
             else:
-                print "%s(%d): %d,%d,%d" % (syscall_name, call_id, syscall_id, syscall_id2, syscall_id3)
+                print "%s(%d): %d,%d" % (syscall_name, call_id, syscall_id, syscall_id2)
 
         t = { "id"     : syscall_id,
               "id2"    : syscall_id2,
-              "id3"    : syscall_id3,
               "cid"    : call_id,
               "name"   : syscall_name,
               "func"   : syscall_func,