sdk: deposit eth task delete dead code

Removes a dead argumen from the deposit eth hh task
in the sdk. This task is ran in CI and is useful for
testing an end to end deposit withdrawal flow for ether.

packages/sdk/tasks/deposit-eth.ts

@@ -27,12 +27,6 @@ task('deposit-eth', 'Deposits ether to L2.')
     'http://localhost:9545',
     types.string
   )
-  .addParam(
-    'opNodeProviderUrl',
-    'op-node provider URL',
-    'http://localhost:7545',
-    types.string
-  )
   .addOptionalParam('to', 'Recipient of the ether', '', types.string)
   .addOptionalParam(
     'amount',