lunit: remove default definition of PKG_SUBDIR

The luarocks infra already provides the correct default value for
PKG_SUBDIR, so it doesn't have to be defined in the .mk file.

Therefore, _VERSION_UPSTREAM doesn't need to be defined either.

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/lunit/lunit.mk

@@ -4,9 +4,7 @@
 #
 ################################################################################
 
-LUNIT_VERSION_UPSTREAM = 0.5
-LUNIT_VERSION = $(LUNIT_VERSION_UPSTREAM)-2
-LUNIT_SUBDIR = lunit-$(LUNIT_VERSION_UPSTREAM)
+LUNIT_VERSION = 0.5-2
 LUNIT_LICENSE = MIT
 LUNIT_LICENSE_FILES = $(LUNIT_SUBDIR)/LICENSE