test: drop duplicated 's'

This fixes the following log message
```
Container TEST-07-ISSUE-1981 terminated by signal KILL.
E: test timed out after 30s s
```

diff --git a/test/TEST-07-ISSUE-1981/test.sh b/test/TEST-07-ISSUE-1981/test.sh
index 199b4f85a8896cdfcb64fb2eecf324bf1748ee74..e72c11fd1bca04e7d0c3894c25988a3ec6905ee3 100755 (executable)
--- a/test/TEST-07-ISSUE-1981/test.sh
+++ b/test/TEST-07-ISSUE-1981/test.sh
@@ -5,7 +5,7 @@ TEST_NO_QEMU=1
 
 . $TEST_BASE_DIR/test-functions
 
-NSPAWN_TIMEOUT=30s
+NSPAWN_TIMEOUT=30
 
 test_setup() {
     create_empty_image_rootdir