tests: remove event loop from command test

This effectively reverts

  commit 39c77fe586
  Author: Michal Prívozník <mprivozn@redhat.com>
  Date:   Wed Jan 16 11:58:00 2013 +0100

    Introduce event loop to commandtest

because nothing in the current test suite needs this
event loop.

Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>

tests/commanddata/test27.log

@@ -1,7 +1,7 @@
 ARG:--readfd
+ARG:3
+ARG:--readfd
 ARG:5
-ARG:--readfd
-ARG:7
 ENV:DISPLAY=:0.0
 ENV:HOME=/home/test
 ENV:HOSTNAME=test
@@ -13,8 +13,8 @@ ENV:USER=test
 FD:0
 FD:1
 FD:2
+FD:3
 FD:5
-FD:7
 DAEMON:no
 CWD:/tmp
 UMASK:0022

tests/commanddata/test3.log

@@ -9,8 +9,8 @@ ENV:USER=test
 FD:0
 FD:1
 FD:2
+FD:3
 FD:5
-FD:7
 DAEMON:no
 CWD:/tmp
 UMASK:0022