removed wallet support other than metamask temporarily (#94)

Current behaviour: when the user clicks on "connect wallet", several
wallets appear.

Desired behaviour: when the user clicks on "connect wallet", only
Metamask should appear.

The desired behaviour is achieved with the minimum amount of code
changes possible because we would like to reactivate all the wallets in
the future when the WSC integration work is complete.

src/components/molecules/MetamaskStatusButton/WalletConnectButton.jsx

@@ -46,7 +46,7 @@ const WalletConnectButton = () => {
                 iconWallet={<WalletOutlined />}
                 variant="primary"
               />
-              <CustomButton
+              {/* <CustomButton
                 text={isFlintWalletInstalled ? "Flint Wallet" : "Install Flint"}
                 onClick={isFlintWalletInstalled ? connectFlintWallet : redirectToFlint}
                 iconWallet={<WalletOutlined />}
@@ -75,7 +75,7 @@ const WalletConnectButton = () => {
                 onClick={isNufiWalletInstalled ? connectToNufiWSC : redirectToNufi}
                 iconWallet={<WalletOutlined />}
                 variant="primary"
-              />
+              /> */}
             </>
           )
         }