phosphor-mapper: Disable building tests

We don't yet use ptest so we are wasting cycles building tests

Change-Id: I39c6dac99a1c2258477ba31e31defa5549389957
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/meta-phosphor/recipes-phosphor/dbus/phosphor-mapper_git.bb b/meta-phosphor/recipes-phosphor/dbus/phosphor-mapper_git.bb
index 01aa6b3..143c78c 100644
--- a/meta-phosphor/recipes-phosphor/dbus/phosphor-mapper_git.bb
+++ b/meta-phosphor/recipes-phosphor/dbus/phosphor-mapper_git.bb
@@ -30,6 +30,8 @@
 
 S = "${WORKDIR}/git"
 
+EXTRA_OECONF += "--disable-tests"
+
 python populate_packages_prepend () {
     mapperlibdir = d.getVar("libdir", True)
     do_split_packages(d, mapperlibdir, '^lib(.*)\.so\.*', 'lib%s', 'Phosphor mapper %s library', extra_depends='', allow_links=True)