Remove mongoose.{c,h} from the mongoose-os repo

mongoose lib is added as a dependency to the root manifest but in the mean time it is explicitly added to all the "root" libs (the ones that did not have any dependencies).

CL: Remove mongoose.{c,h} from the mongoose-os repo; mongoose library should be used instead.

PUBLISHED_FROM=fa547aec84192cdc8fa6e6181aafec9b4c74bdac

Author: Deomid Ryabkov

mos.yml

@@ -29,3 +29,7 @@ tags:
   - net
 
 manifest_version: 2017-09-29
+
+# Temporary, while root manifest change propagates (2018/03/29).
+libs:
+  - origin: https://github.com/mongoose-os-libs/mongoose