remove old keys (15), minor tweak to name for the post-genesis keys (4) (#696)

Author: bhuan

testnet/02401e7082b38cd1cd4f0f5dcc8b1b04b163596810461cd9bf2ecb20748e85f840.json

@@ -1,6 +1,6 @@
 {
   "id": 9,
-  "name": "Category Lab - 9",
+  "name": "Category Labs - 9",
   "secp": "02401e7082b38cd1cd4f0f5dcc8b1b04b163596810461cd9bf2ecb20748e85f840",
   "bls": "858bfae6d32155bf293f37c42eed292a19403e328d6eeed08ba2354df2914b3fe915d176d0588b60e5e0f3d228f2fd01",
   "website": "https://www.category.xyz/",

testnet/02647a3195db804a7b79dcfdf4a43a95f49d59cf56b36b1cf28b7e33ecec68667e.json

@@ -1,6 +1,6 @@
 {
   "id": 12,
-  "name": "Category Lab - 12",
+  "name": "Category Labs - 12",
   "secp": "02ad84a1e3b793ba691ca67c2bde9ba988254912c5b2ab8935cadf1292529c2c87",
   "bls": "ad1937406bd46b34b637b7ed638d30522d195ac22dedc909ff74613cceca7cfcbb7436715c3b0bea0598726304118eea",
   "website": "https://www.category.xyz/",

testnet/028df9f3fed153dc195b86c0d5fb0b9ab2560316071a3f6f1c16dce95da7f679d4.json

@@ -1,6 +1,6 @@
 {
   "id": 10,
-  "name": "Category Lab - 10",
+  "name": "Category Labs - 10",
   "secp": "02d6156380cbed7a3e51384add2935ae998038e11495081d8ee037d871b0887f65",
   "bls": "a27f72e4b4dfedc17644a7105c6d283ea99b982487d904cfb7cb09d507f1ca3d53682eb21a091f24c59b37d79906a3e3",
   "website": "https://www.category.xyz/",