fix: do not show price data on non-mainnet

src/hooks/useUSDCPrice.ts

@@ -26,15 +26,8 @@ export default function useUSDCPrice(currency?: Currency): Price<Currency, Token
       return undefined
     }
 
-    // return some fake price data for non-mainnet
     if (chainId !== 1) {
-      const fakeUSDC = new Token(chainId, '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48', 6, 'fUSDC', 'Fake USDC')
-      return new Price(
-        currency,
-        fakeUSDC,
-        10 ** Math.max(0, currency.decimals - 6),
-        15 * 10 ** Math.max(6 - currency.decimals, 0)
-      )
+      return undefined
     }
 
     // handle usdc