Minor remote GDB cleanup.

Expand the help text on the --remote-gdb-port option so
people know you can use it to disable remote gdb without
reading the source code, and thus don't waste any time
trying to add a separate option to do that.
Clean up some gdb-related cruft I found while looking
for where one would add a gdb disable option, before
I found the comment that told me that I didn't need
to do that.

1 files changed, 0 insertions, 3 deletions

diff --git a/src/cpu/checker/cpu.hh b/src/cpu/checker/cpu.hh
index 450ce6228..73b27161a 100644
--- a/src/cpu/checker/cpu.hh
+++ b/src/cpu/checker/cpu.hh
@@ -54,9 +54,6 @@ namespace TheISA
 class Processor;
 class PhysicalMemory;
 
-class RemoteGDB;
-class GDBListener;
-
 #else
 
 class Process;