[NTOSKRNL] Remove unused internal/amd64/asmmacro.S

Added, but never(?) used.

Addendum to 99e6ad7 (r46620).

ntoskrnl/include/internal/amd64/asmmacro.S

@@ -1,81 +0,0 @@
-/*
- * COPYRIGHT:       See COPYING in the top level directory
- * PROJECT:         ReactOS Kernel
- * FILE:            ntoskrnl/include/internal/amd64/asmmacro.S
- * PURPOSE:         Macros for x64 assembly
- * PROGRAMMERS:     Timo Kreuzer (timo.kreuzer@reactos.org)
- */
-
-.intel_syntax noprefix
-.code64
-
-/* Macros for x64 stack unwind OPs */
-
-.macro .proc name
-    .func name
-    .global _\name
-    _\name:
-    .cfi_startproc
-    .equ cfa_current_offset, -8
-.endm
-
-.macro .endproc
-    .cfi_endproc
-    .endfunc
-.endm
-
-.macro .allocstack size
-    .cfi_adjust_cfa_offset \size
-    .set cfa_current_offset, cfa_current_offset - \size
-.endm
-
-.macro .pushframe code
-    .if (\code == 0)
-        .cfi_adjust_cfa_offset 0x28
-        .set cfa_current_offset, cfa_current_offset - 0x28
-    .else
-        .cfi_adjust_cfa_offset 0x30
-        .set cfa_current_offset, cfa_current_offset - 0x30
-    .endif
-.endm
-
-.macro .pushreg reg
-    .cfi_adjust_cfa_offset 8
-    .equ cfa_current_offset, cfa_current_offset - 8
-    .cfi_offset \reg, cfa_current_offset
-.endm
-
-.macro .savereg reg, offset
-    // checkme!!!
-    .cfi_offset \reg, \offset
-.endm
-
-.macro .savexmm128 reg, offset
-    // checkme!!!
-    .cfi_offset \reg, \offset
-.endm
-
-.macro .setframe reg, offset
-    .cfi_def_cfa reg, \offset
-    .equ cfa_current_offset, \offset
-.endm
-
-.macro .endprolog
-.endm
-
-.macro UNIMPLEMENTED2 line, func
-    jmp 3f
-    .equ expr, 12
-1:  .asciz "\func"
-2:  .asciz __FILE__
-3:
-    sub rsp, 0x20
-    lea rcx, _MsgUnimplemented[rip]
-    lea rdx, 1b[rip]
-    lea r8, 2b[rip]
-    mov r9, \line
-    call _DbgPrint
-    add rsp, 0x20
-.endm
-#define UNIMPLEMENTED UNIMPLEMENTED2 __LINE__,
-