[#110] nns: Remove unused config

Signed-off-by: Alexander Chuprov <a.chuprov@yadro.com>

nns/nns.yml

@@ -1,32 +0,0 @@
-name: "NameService"
-supportedstandards: ["NEP-11"]
-safemethods:
-  - "balanceOf"
-  - "decimals"
-  - "getAllRecords"
-  - "getPrice"
-  - "getRecord"
-  - "isAvailable"
-  - "ownerOf"
-  - "properties"
-  - "symbol"
-  - "totalSupply"
-  - "tokensOf"
-  - "tokens"
-  - "resolve"
-  - "roots"
-events:
-  - name: Transfer
-    parameters:
-      - name: from
-        type: Hash160
-      - name: to
-        type: Hash160
-      - name: amount
-        type: Integer
-      - name: tokenId
-        type: ByteArray
-permissions:
-  - hash: fffdc93764dbaddd97c48f252a53ea4643faa3fd
-    methods: ["update"]
-  - methods: ["onNEP11Payment"]