build-unit-test-docker: Disable libpldm tests again

Now that we've merged the change of the option type from feature to
boolean[1], specify that the tests should not be built.

[1]: https://github.com/openbmc/libpldm/commit/65c64099e17ad81219726e790598cdc1f6e78f9a

Change-Id: Ife75a3505a6975174ffd8036ac042bdbcba27560
Signed-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>
diff --git a/scripts/build-unit-test-docker b/scripts/build-unit-test-docker
index 7789df3..0dae40e 100755
--- a/scripts/build-unit-test-docker
+++ b/scripts/build-unit-test-docker
@@ -229,7 +229,7 @@
     ),
     "openbmc/libpldm": PackageDef(
         build_type="meson",
-        config_flags=["-Dabi=deprecated,stable", "--wrap-mode=default"],
+        config_flags=["-Dabi=deprecated,stable", "-Dtests=false"],
     ),
     "openbmc/sdbusplus": PackageDef(
         depends=[