m68k: drop .bss override

The comment looks bogus (perhaps simply stale), and there are also no
other precautions against subsections being used on ELF with .bss. It
also doesn't look to be a good idea to override the custom handler that
ELF has (afaict doing so further broke .previous).

gas/config/tc-m68k.c

diff --git a/gas/config/tc-m68k.c b/gas/config/tc-m68k.c
index d22facf..d04aa1e 100644
--- a/gas/config/tc-m68k.c
+++ b/gas/config/tc-m68k.c
@@ -455,7 +455,6 @@
 static int reverse_8_bits (int in);
 static void install_gen_operand (int mode, int val);
 static void install_operand (int mode, int val);
-static void s_bss (int);
 static void s_data1 (int);
 static void s_data2 (int);
 static void s_even (int);
@@ -862,7 +861,6 @@
 {
   {"data1", s_data1, 0},
   {"data2", s_data2, 0},
-  {"bss", s_bss, 0},
   {"even", s_even, 0},
   {"skip", s_space, 0},
   {"proc", s_proc, 0},
@@ -5494,16 +5492,6 @@
 }
 
 static void
-s_bss (int ignore ATTRIBUTE_UNUSED)
-{
-  /* We don't support putting frags in the BSS segment, we fake it
-     by marking in_bss, then looking at s_skip for clues.  */
-
-  subseg_set (bss_section, 0);
-  demand_empty_rest_of_line ();
-}
-
-static void
 s_even (int ignore ATTRIBUTE_UNUSED)
 {
   int temp;