rcutorture: Make test output less chatty

This commit drops no-longer-needed diagnostics from the output.  Some of
them are retained in logfiles, in case they are ever needed.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Greg KH <gregkh@linuxfoundation.org>

tools/testing/selftests/rcutorture/bin/configinit.sh

@@ -14,8 +14,6 @@
 # for example, "O=/tmp/foo".  If this argument is omitted, the .config
 # file will be generated directly in the current directory.
 
-echo configinit.sh $*
-
 T=/tmp/configinit.sh.$$
 trap 'rm -rf $T' 0
 mkdir $T