reactor: simplify error (#1480)

Co-authored-by: Justin Tieri <[email protected]>

relayer/chains/cosmos/account.go

@@ -58,10 +58,8 @@ func (cc *CosmosProvider) GetAccountWithHeight(_ client.Context, addr sdk.AccAdd
 
 // EnsureExists returns an error if no account exists for the given address else nil.
 func (cc *CosmosProvider) EnsureExists(clientCtx client.Context, addr sdk.AccAddress) error {
-	if _, err := cc.GetAccount(clientCtx, addr); err != nil {
-		return err
-	}
-	return nil
+	_, err := cc.GetAccount(clientCtx, addr)
+	return err
 }
 
 // GetAccountNumberSequence returns sequence and account number for the given address.

relayer/chains/cosmos/keys.go

@@ -180,10 +180,7 @@ func (cc *CosmosProvider) ListAddresses() (map[string]string, error) {
 
 // DeleteKey removes a key from the keystore for the specified name.
 func (cc *CosmosProvider) DeleteKey(name string) error {
-	if err := cc.Keybase.Delete(name); err != nil {
-		return err
-	}
-	return nil
+	return cc.Keybase.Delete(name)
 }
 
 // KeyExists returns true if a key with the specified name exists in the keystore, it returns false otherwise.