systemc: Remove some old warn includes from ext/channel.

The calls to sc_channel_warn_unimpl have been removed, so the includes
aren't needed.

Change-Id: I58a916a7c4ef9a266be591789696457799b6b8dd
Reviewed-on: https://gem5-review.googlesource.com/c/13198
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>

src/systemc/ext/channel/sc_event_queue.hh

@@ -38,7 +38,6 @@
 #include "../core/sc_module_name.hh"
 #include "../core/sc_port.hh"
 #include "../core/sc_time.hh"
-#include "warn_unimpl.hh"
 
 namespace sc_core
 {

src/systemc/ext/channel/sc_fifo_in.hh

@@ -33,7 +33,6 @@
 #include "../core/sc_event.hh"
 #include "../core/sc_port.hh"
 #include "sc_fifo_in_if.hh"
-#include "warn_unimpl.hh"
 
 namespace sc_core
 {

src/systemc/ext/channel/sc_fifo_out.hh

@@ -32,7 +32,6 @@
 
 #include "../core/sc_port.hh"
 #include "sc_fifo_out_if.hh"
-#include "warn_unimpl.hh"
 
 namespace sc_core
 {

src/systemc/ext/channel/sc_inout_resolved.hh

@@ -33,7 +33,6 @@
 #include "sc_inout.hh"
 #include "sc_signal_in_if.hh"
 #include "sc_signal_inout_if.hh"
-#include "warn_unimpl.hh"
 
 namespace sc_dt
 {

src/systemc/ext/channel/sc_inout_rv.hh

@@ -36,7 +36,6 @@
 #include "sc_signal_in_if.hh"
 #include "sc_signal_inout_if.hh"
 #include "sc_signal_rv.hh"
-#include "warn_unimpl.hh"
 
 namespace sc_dt
 {

src/systemc/ext/channel/sc_out.hh

@@ -32,7 +32,6 @@
 
 #include "../core/sc_port.hh"
 #include "sc_inout.hh"
-#include "warn_unimpl.hh"
 
 namespace sc_core
 {

src/systemc/ext/channel/sc_out_resolved.hh

@@ -34,7 +34,6 @@
 #include "sc_out.hh"
 #include "sc_signal_in_if.hh"
 #include "sc_signal_inout_if.hh"
-#include "warn_unimpl.hh"
 
 namespace sc_dt
 {

src/systemc/ext/channel/sc_out_rv.hh

@@ -34,7 +34,6 @@
 #include "sc_inout_rv.hh"
 #include "sc_signal_in_if.hh"
 #include "sc_signal_inout_if.hh"
-#include "warn_unimpl.hh"
 
 namespace sc_dt
 {