chore(staking): remove amount_staked_per_account

This endpoint was built for use calculating fogo points.  However, pulling the
data from the chain is too slow to run in Vercel endpoints, so we're going to
clean this up and try a different approach instead

Author: cprussin

apps/staking/src/app/api/v1/amount_staked_per_account/route.ts

@@ -80,9 +80,6 @@ export const SIMULATION_PAYER_ADDRESS = getOr(
   "SIMULATION_PAYER_ADDRESS",
   "E5KR7yfb9UyVB6ZhmhQki1rM1eBcxHvyGKFZakAC5uc",
 );
-export const AMOUNT_STAKED_PER_ACCOUNT_SECRET = demandInProduction(
-  "AMOUNT_STAKED_PER_ACCOUNT_SECRET",
-);
 
 class MissingEnvironmentError extends Error {
   constructor(name: string) {

apps/staking/src/config/server.ts

@@ -12,8 +12,7 @@
         "MAINNET_API_RPC",
         "BLOCKED_REGIONS",
         "AMPLITUDE_API_KEY",
-        "GOOGLE_ANALYTICS_ID",
-        "AMOUNT_STAKED_PER_ACCOUNT_SECRET"
+        "GOOGLE_ANALYTICS_ID"
       ]
     },
     "start:dev": {