[Desktop] Remove bind_util

[NejcZdovc]

Bind util was created as we didn't know how to handle mojo pointers. Now we have a way with shared pointers. You can see example here https://github.com/brave/brave-core/blob/d3487abc76a2760ac1614e03b6f66dd78f4d62ca/vendor/bat-native-ledger/src/bat/ledger/internal/promotion/promotion.cc#L179

[LaurenWags]

Verified passed with

Brave	1.15.56 Chromium: 85.0.4183.102 (Official Build) dev (64-bit)
Revision	ffe848af6a5df4fa127e2929331116b7f9f1cb30-refs/branch-heads/4183@{#1770}
OS	macOS Version 10.14.6 (Build 18G3020)

Verified test plan from brave/brave-core#6548

Confirmed able to claim promotion (UGP grant on staging) via panel, NTP widget, and brave://rewards page

Confirmed brave://rewards-internals showed promotion data as expected for above UGP grant

Confirmed able to do 1 time tips, recurring tips, and AC using promotion

Confirmed brave://rewards-internals showed data from above contributions (1 time tips, recurring tips, AC) as expected

Confirmed able to restore a wallet with waiting ad grant and then confirmed I could claim that ad grant

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Verification passed on

Brave | 1.15.56 Chromium: 85.0.4183.102 (Official Build) dev (64-bit)
-- | --
Revision | ffe848af6a5df4fa127e2929331116b7f9f1cb30-refs/branch-heads/4183@{#1770}
OS | Windows 10 OS Version 1903 (Build 18362.1016)

• Verified test plan from Removes bind_util brave-core#6548

Confirmed able to claim promotion (UGP grant on staging) via panel, NTP widget, and brave://rewards page

Confirmed brave://rewards-internals showed promotion data as expected for above UGP grant

Confirmed able to do 1 time tips, recurring tips, and AC using promotion

Confirmed brave://rewards-internals showed data from above contributions (1 time tips, recurring tips, AC) as expected

Confirmed able to restore a wallet with waiting ad grant and then confirmed I could claim that ad grant

---

Verification passed on

Brave	1.15.56 Chromium: 85.0.4183.102 (Official Build) dev (64-bit)
Revision	ffe848af6a5df4fa127e2929331116b7f9f1cb30-refs/branch-heads/4183@{#1770}
OS	Ubuntu 18.04 LTS

• Verified test plan from Removes bind_util brave-core#6548

Confirmed able to claim promotion (UGP grant on staging) via panel, NTP widget, and brave://rewards page

Confirmed brave://rewards-internals showed promotion data as expected for above UGP grant

Confirmed able to do 1 time tips, recurring tips, and AC using promotion

   

Confirmed brave://rewards-internals showed data from above contributions (1 time tips, recurring tips, AC) as expected

Confirmed able to restore a wallet with waiting ad grant and then confirmed I could claim that ad grant