mpc8xx: remove unused linker script

Now TQM8xx is the only remaining board family of mpc8xx.
It uses its own linker script, board/tqc/tqm8xx/u-boot.lds.

arch/powerpc/cpu/mpc8xx/u-boot.lds is not used by any boards.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Wolfgang Denk <wd@denx.de>

arch/powerpc/cpu/mpc8xx/u-boot.lds

@@ -1,82 +0,0 @@
-/*
- * (C) Copyright 2000-2010
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-OUTPUT_ARCH(powerpc)
-
-SECTIONS
-{
-  /* Read-only sections, merged into text segment: */
-  . = + SIZEOF_HEADERS;
-  .text      :
-  {
-    arch/powerpc/cpu/mpc8xx/start.o	(.text*)
-    arch/powerpc/cpu/mpc8xx/traps.o	(.text*)
-
-    *(.text*)
-  }
-  _etext = .;
-  PROVIDE (etext = .);
-  .rodata    :
-  {
-    *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*)))
-  }
-
-  /* Read-write section, merged into data segment: */
-  . = (. + 0x00FF) & 0xFFFFFF00;
-  _erotext = .;
-  PROVIDE (erotext = .);
-  .reloc   :
-  {
-    _GOT2_TABLE_ = .;
-    KEEP(*(.got2))
-    KEEP(*(.got))
-    PROVIDE(_GLOBAL_OFFSET_TABLE_ = . + 4);
-    _FIXUP_TABLE_ = .;
-    KEEP(*(.fixup))
-  }
-  __got2_entries = ((_GLOBAL_OFFSET_TABLE_ - _GOT2_TABLE_) >> 2) - 1;
-  __fixup_entries = (. - _FIXUP_TABLE_)>>2;
-
-  .data    :
-  {
-    *(.data*)
-    *(.sdata*)
-  }
-  _edata  =  .;
-  PROVIDE (edata = .);
-
-  . = .;
-
-  . = ALIGN(4);
-  .u_boot_list : {
-	KEEP(*(SORT(.u_boot_list*)));
-  }
-
-
-  . = .;
-  __start___ex_table = .;
-  __ex_table : { *(__ex_table) }
-  __stop___ex_table = .;
-
-  . = ALIGN(256);
-  __init_begin = .;
-  .text.init : { *(.text.init) }
-  .data.init : { *(.data.init) }
-  . = ALIGN(256);
-  __init_end = .;
-
-  __bss_start = .;
-  .bss (NOLOAD)       :
-  {
-   *(.bss*)
-   *(.sbss*)
-   *(COMMON)
-   . = ALIGN(4);
-  }
-  __bss_end = . ;
-  PROVIDE (end = .);
-}