dev: Stop including config/the_isa.hh unnecessarily.

This file was included in a few files which didn't use TheISA.

Change-Id: Ib296b88dc6cfe9d487ee31cf385bb872d2cffaf2
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/22270
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>

src/dev/platform.cc

@@ -32,7 +32,6 @@
 #include "dev/platform.hh"
 
 #include "base/logging.hh"
-#include "config/the_isa.hh"
 #include "sim/sim_exit.hh"
 
 using namespace std;

src/dev/serial/uart8250.cc

@@ -39,7 +39,6 @@
 
 #include "base/inifile.hh"
 #include "base/trace.hh"
-#include "config/the_isa.hh"
 #include "debug/Uart.hh"
 #include "dev/platform.hh"
 #include "mem/packet.hh"