classes/create-spdx: Comment out placeholder license warning

We don't want this warning causing problems on the AB, so leave it
comment out for now

(From OE-Core rev: d41018311abf91899645b8f3160db540abdb5398)

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/create-spdx.bbclass

@@ -88,7 +88,8 @@ def convert_license_to_spdx(lic, document, d):
         if l == "PD":
             add_extracted_license(spdx_license, l, "Software released to the public domain")
         elif add_extracted_license(spdx_license, l, "This software is licensed under the %s license" % l):
-            bb.warn("No SPDX License found for %s. Creating a place holder" % l)
+            pass
+            #bb.warn("No SPDX License found for %s. Creating a place holder" % l)
 
         return spdx_license