Remove the "for moment" comments

A few spots setting some gdb output stream variables have a "for
moment" comment.  These comments aren't useful and I think the moment
has passed -- these are permanent now.

gdb/event-top.c

diff --git a/gdb/event-top.c b/gdb/event-top.c
index a06221b..a5f24f6 100644
--- a/gdb/event-top.c
+++ b/gdb/event-top.c
@@ -1338,8 +1338,8 @@ gdb_setup_readline (int editing)
     gdb_stdout = new pager_file (new stdio_file (ui->outstream));
   gdb_stderr = new stderr_file (ui->errstream);
   gdb_stdlog = new timestamped_file (gdb_stderr);
-  gdb_stdtarg = gdb_stderr; /* for moment */
-  gdb_stdtargerr = gdb_stderr; /* for moment */
+  gdb_stdtarg = gdb_stderr;
+  gdb_stdtargerr = gdb_stderr;
 
   /* If the input stream is connected to a terminal, turn on editing.
      However, that is only allowed on the main UI, as we can only have

gdb/main.c

diff --git a/gdb/main.c b/gdb/main.c
index 8c979879..91fa196 100644
--- a/gdb/main.c
+++ b/gdb/main.c
@@ -676,8 +676,8 @@ captured_main_1 (struct captured_main_args *context)
   main_ui = new ui (stdin, stdout, stderr);
   current_ui = main_ui;
 
-  gdb_stdtargerr = gdb_stderr;	/* for moment */
-  gdb_stdtargin = gdb_stdin;	/* for moment */
+  gdb_stdtargerr = gdb_stderr;
+  gdb_stdtargin = gdb_stdin;
 
   if (bfd_init () != BFD_INIT_MAGIC)
     error (_("fatal error: libbfd ABI mismatch"));

gdb/tui/tui-io.c

diff --git a/gdb/tui/tui-io.c b/gdb/tui/tui-io.c
index deea9b9..51f0816 100644
--- a/gdb/tui/tui-io.c
+++ b/gdb/tui/tui-io.c
@@ -839,8 +839,8 @@ tui_setup_io (int mode)
       gdb_stdout = tui_stdout;
       gdb_stderr = tui_stderr;
       gdb_stdlog = tui_stdlog;
-      gdb_stdtarg = gdb_stderr;	/* for moment */
-      gdb_stdtargerr = gdb_stderr;	/* for moment */
+      gdb_stdtarg = gdb_stderr;
+      gdb_stdtargerr = gdb_stderr;
       current_uiout = tui_out;
 
       /* Save tty for SIGCONT.  */
@@ -852,8 +852,8 @@ tui_setup_io (int mode)
       gdb_stdout = tui_old_stdout;
       gdb_stderr = tui_old_stderr;
       gdb_stdlog = tui_old_stdlog;
-      gdb_stdtarg = gdb_stderr;	/* for moment */
-      gdb_stdtargerr = gdb_stderr;	/* for moment */
+      gdb_stdtarg = gdb_stderr;
+      gdb_stdtargerr = gdb_stderr;
       current_uiout = tui_old_uiout;
 
       /* Restore readline.  */