fix: disable incentives for Umami vaults

[Clonescody]

ARB incentives are over for Umami vaults but still returning a value, disable adding them to the object

[llamatester]

The umami-finance adapter exports pools:

Test Suites: 1 passed, 1 total
Tests: 28 passed, 28 total
Snapshots: 0 total
Time: 0.229 s
Ran all test suites.

Nb of pools: 4
 

Sample pools:
┌─────────┬──────────────────────────────────────────────┬────────────────────┬─────────┬─────────────────┬──────────────────────────────────────────────────┬────────────────────────────────────────────────────────┬────────────┬─────────────────┐
│ (index) │ pool                                         │ tvlUsd             │ apyBase │ symbol          │ underlyingTokens                                 │ url                                                    │ chain      │ project         │
├─────────┼──────────────────────────────────────────────┼────────────────────┼─────────┼─────────────────┼──────────────────────────────────────────────────┼────────────────────────────────────────────────────────┼────────────┼─────────────────┤
│ 0       │ '0xcd8011aab161a75058eab24e0965bab0b918af29' │ 4378707.64211841   │ 11      │ 'gmWBTC'        │ [ '0x2f2a2543b76a4166549f7aab2e75bef0aefc5b0f' ] │ 'https://umami.finance/vaults/arbitrum/gm/gmwbtc'      │ 'Arbitrum' │ 'umami-finance' │
│ 1       │ '0x4bca8d73561aaeee2d3a584b9f4665310de1dd69' │ 1956549.0856444202 │ 32.26   │ 'gmWETH'        │ [ '0x82aF49447D8a07e3bd95BD0d56f35241523fBab1' ] │ 'https://umami.finance/vaults/arbitrum/gm/gmweth'      │ 'Arbitrum' │ 'umami-finance' │
│ 2       │ '0x5f851f67d24419982ecd7b7765defd64fbb50a97' │ 828753.2758645844  │ 11      │ 'gmUSDC (wBTC)' │ [ '0xaf88d065e77c8cc2239327c5edb3a432268e5831' ] │ 'https://umami.finance/vaults/arbitrum/gm/gmusdc_wbtc' │ 'Arbitrum' │ 'umami-finance' │
│ 3       │ '0x959f3807f0aa7921e18c78b00b2819ba91e52fef' │ 501830.80380720214 │ 32.26   │ 'gmUSDC'        │ [ '0xaf88d065e77c8cc2239327c5edb3a432268e5831' ] │ 'https://umami.finance/vaults/arbitrum/gm/gmusdc'      │ 'Arbitrum' │ 'umami-finance' │
└─────────┴──────────────────────────────────────────────┴────────────────────┴─────────┴─────────────────┴──────────────────────────────────────────────────┴────────────────────────────────────────────────────────┴────────────┴─────────────────┘