- disable git in tests

Index: misc/units
--- misc/units.orig
+++ misc/units
@@ -2002,7 +2002,7 @@ failed_git_marker ()
     local f=$1
     local l
 
-    if type "git" > /dev/null 2>&1; then
+    if false && type "git" > /dev/null 2>&1; then
 	l=$(git ls-files -- "$f")
 	if [ -z "$l" ]; then
 	    echo '<G>'
