dev-db/mongodb: remove unused files

Closes: https://github.com/gentoo/gentoo/pull/6768

dev-db/mongodb/files/mongodb.conf

@@ -1,8 +0,0 @@
-# See http://www.mongodb.org/display/DOCS/File+Based+Configuration for format details
-# Run mongod --help to see a list of options
-
-bind_ip = 127.0.0.1
-quiet = true
-dbpath = /var/lib/mongodb
-logpath = /var/log/mongodb/mongod.log
-logappend = true

dev-db/mongodb/files/mongodb.conf-r2

@@ -1,33 +0,0 @@
-# !! IMPORTANT !!
-#
-# This file uses the YAML format as described in the documentation:
-#   http://docs.mongodb.org/manual/reference/configuration-options/
-
-storage:
-    dbPath: "/var/lib/mongodb"
-
-systemLog:
-    destination: file
-    path: "/var/log/mongodb/mongodb.log"
-    quiet: true
-    logAppend: true
-
-net:
-    port: 27017
-    bindIp: 127.0.0.1
-#    ssl:
-#        mode: disabled
-
-#security:
-    #keyFile:
-    #clusterAuthMode:
-
-#replication:
-    #replSetName:
-
-# Specifies one of the MongoDB parameters described here:
-#   http://docs.mongodb.org/manual/reference/parameters/
-#
-# You can specify multiple setParameter fields such as:
-#   setParameter: {enableTestCommands: 1}
-#setParameter: