[gjs] test: Clean up generated dummy coverage file

[Philip Chimento <pchimento src gnome org>]

commit 23f3ee47ef5c175d0f177e06ffbf34a6d4aa059d
Author: Philip Chimento <philip endlessm com>
Date:   Mon Dec 12 11:35:45 2016 -0800

    test: Clean up generated dummy coverage file
    
    This was causing "make distcheck" to fail because it isn't cleaned up by
    "make distclean".
    
    Unreviewed.

 test/testCommandLine.sh |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/test/testCommandLine.sh b/test/testCommandLine.sh
index 45d03c5..ad4df6b 100755
--- a/test/testCommandLine.sh
+++ b/test/testCommandLine.sh
@@ -91,6 +91,7 @@ report "-I after script should succeed but give a warning"
 report "--coverage-prefix after script should succeed but give a warning"
 "$gjs" -c 'imports.system.exit(0)' --coverage-prefix=foo --coverage-output=foo 2>&1 | grep -q 
'Gjs-WARNING.*--coverage-output'
 report "--coverage-output after script should succeed but give a warning"
+rm -f foo/coverage.lcov
 
 # --version works
 "$gjs" --version >/dev/null