arch: Remove the mt.hh switching header.

This header was only useful in MIPS and is only used internally within
MIPS. It doesn't need to be a switching header file.

Change-Id: Id7005f73b95e122f9ab83b3b657cae3391682f26
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/18468
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
diff --git a/src/arch/SConscript b/src/arch/SConscript
index ed583aa..f59b026 100644
--- a/src/arch/SConscript
+++ b/src/arch/SConscript
@@ -67,7 +67,6 @@
         locked_mem.hh
         microcode_rom.hh
         mmapped_ipr.hh
-        mt.hh
         process.hh
         pseudo_inst.hh
         registers.hh
diff --git a/src/arch/alpha/mt.hh b/src/arch/alpha/mt.hh
deleted file mode 100644
index 640825b..0000000
--- a/src/arch/alpha/mt.hh
+++ /dev/null
@@ -1,70 +0,0 @@
-/*
- * Copyright (c) 2009 The Regents of The University of Michigan
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met: redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer;
- * redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution;
- * neither the name of the copyright holders nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * Authors: Korey Sewell
- *
- */
-
-#ifndef __ARCH_ALPHA_MT_HH__
-#define __ARCH_ALPHA_MT_HH__
-
-/**
- * @file
- *
- * ISA-specific helper functions for multithreaded execution.
- */
-
-#include <iostream>
-
-#include "arch/isa_traits.hh"
-#include "base/bitfield.hh"
-#include "base/logging.hh"
-#include "base/trace.hh"
-
-namespace AlphaISA
-{
-
-template <class TC>
-inline unsigned
-getVirtProcNum(TC *tc)
-{
-    fatal("Alpha is not setup for multithreaded ISA extensions");
-    return 0;
-}
-
-
-template <class TC>
-inline unsigned
-getTargetThread(TC *tc)
-{
-    fatal("Alpha is not setup for multithreaded ISA extensions");
-    return 0;
-}
-
-} // namespace AlphaISA
-
-#endif
diff --git a/src/arch/sparc/mt.hh b/src/arch/sparc/mt.hh
deleted file mode 100644
index faf6091..0000000
--- a/src/arch/sparc/mt.hh
+++ /dev/null
@@ -1,70 +0,0 @@
-/*
- * Copyright (c) 2011 The Regents of The University of Michigan
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met: redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer;
- * redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution;
- * neither the name of the copyright holders nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * Authors: Korey Sewell
- *
- */
-
-#ifndef __ARCH_SPARC_MT_HH__
-#define __ARCH_SPARC_MT_HH__
-
-/**
- * @file
- *
- * ISA-specific helper functions for multithreaded execution.
- */
-
-#include <iostream>
-
-#include "arch/isa_traits.hh"
-#include "base/bitfield.hh"
-#include "base/logging.hh"
-#include "base/trace.hh"
-
-namespace SparcISA
-{
-
-template <class TC>
-inline unsigned
-getVirtProcNum(TC *tc)
-{
-    fatal("Sparc is not setup for multithreaded ISA extensions");
-    return 0;
-}
-
-
-template <class TC>
-inline unsigned
-getTargetThread(TC *tc)
-{
-    fatal("Sparc is not setup for multithreaded ISA extensions");
-    return 0;
-}
-
-} // namespace SparcISA
-
-#endif