fix provider behavior

end2end-tests/cucumber-features/transfer_all.feature

@@ -2,13 +2,13 @@
 Feature: Balance transfer all
 
   Scenario: If bob sends all his ĞDs to Dave
-    When bob sends all her ĞDs to dave
+    When bob sends all his ĞDs to dave
     """
-    even Bob is a member, he is allowed to empty his account completely,
-    but duniter-account still let him exist
+    Bob is a member, as such he is not allowed to empty his account completely,
+    if he tries to do so, the existence deposit (2 ĞD) must remain.
     """
-    Then bob should have 0 ĞD
+    Then bob should have 2 ĞD
     """
-    10 ĞD (initial Bob balance) - 0.02 ĞD (transaction fees)
+    10 ĞD (initial Bob balance) - 2 ĞD (Existential deposit) - 0.02 ĞD (transaction fees)
     """
-    Then dave should have 998 cĞD
+    Then dave should have 798 cĞD

end2end-tests/tests/common/balances.rs

@@ -80,9 +80,7 @@ pub async fn transfer_all(client: &Client, from: AccountKeyring, to: AccountKeyr
         client
             .tx()
             .create_signed(
-                &gdev::tx().balances().transfer_all(to.clone().into(), false),
-                // Since 0.9.42, `keep_alive=false` will trigger an error due to providers check
-                // when there are remaining consumers
+                &gdev::tx().balances().transfer_all(to.into(), false),
                 &from,
                 BaseExtrinsicParamsBuilder::new(),
             )