package/pkg-meson: do not pass -j$(PARALLEL_JOBS) to ninja

Now that we are using ninja with jobserver support we should not pass
-j$(PARALLEL_JOBS) to ninja.

Fixes:
ninja: warning: -jN forced on command line; ignoring GNU make jobserver.

Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/pkg-meson.mk

@@ -27,7 +27,7 @@
 #
 MESON		= PYTHONNOUSERSITE=y $(HOST_DIR)/bin/meson
 NINJA		= PYTHONNOUSERSITE=y $(HOST_DIR)/bin/ninja
-NINJA_OPTS	= $(if $(VERBOSE),-v) -j$(PARALLEL_JOBS)
+NINJA_OPTS	= $(if $(VERBOSE),-v)
 
 # https://mesonbuild.com/Reference-tables.html#cpu-families
 ifeq ($(BR2_arcle)$(BR2_arceb),y)