[Android] Remove cookie consent modal

[deeppandya]

With this issue, we need to remove cookie consent modal and all logic from the code.

Test Plan
Plan 1 :

1. fresh install
2. go to settings - > Brave Shields & privacy
3. Block cookie consent notices option should be enabled by default.

Plan 2 :

1. upgrade an app version
2. Block cookie consent notices option should respect the change from previous version

Plan 3 :

1. Verify with https://www.cookieyes.com/blog/gdpr-cookie-consent-banner-examples/ if it respects the option Block cookie consent notices

[kjozwiak]

The above requires 1.59.100 or higher for 1.59.x verification 👍

[hffvld]

Verified on Pixel 7 using version(s):

Device/OS: Pixel 7 [panther_beta-user 14 U1B1.230908.003 release-keys]
Brave build: 1.59.102
Chromium: 117.0.5938.140 (Official Build) beta (64-bit) 
Revision: 11284b6d5d51252fe1a6fb6b5cba35ef98982357

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Fresh install

STEPS:

1. Fresh install and launch Brave for the first time
2. Three-dot menu > Settings > Brave Shields & privacy
3. Scroll down to the Other privacy settings section > Verify
4. Open https://www.cookieyes.com/blog/gdpr-cookie-consent-banner-examples/ > Verify
5. Go to the settings and disable the toggle switch for Block cookie consent notices
6. Open or refresh https://www.cookieyes.com/blog/gdpr-cookie-consent-banner-examples/ if it still opened > Verify
7. Close and relaunch Brave 5 - 10 times > Verify
8. Close and relaunch Brave > Go to the Settings > Brave Shields & privacy > Other privacy settings section > Verify

ACTUAL RESULTS:

• Verified that the Block cookie consent notices toggle switch is shown in the Settings > Brave Shields & privacy > Under Other privacy settings and enabled by default
• Verified that cookie consent message on the website is not shown when Block cookie consent notices settings is ON
• Verified that cookie consent message on the website is shown when Block cookie consent notices settings is OFF
• Verified that the cookie consent notice is not shown
• Verified that the Block cookie consent notices toggle switch is not removed and respects its previous position after Brave relaunch

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English. Dark Mode	English. Light Mode	Russian	German
Hebrew	Japanise	French	Spanish

2023-10-02_12-43-36.mp4

Upgrade install

STEPS:

1. Install build 1.59.99 and launch Brave
2. Three-dot menu > Settings > Brave Shields & privacy
3. Scroll down to the Other privacy settings section
4. Find Block cookie consent notices toggle switch` > Disable it
5. Upgrade Brave to the build 1.59.102 and launch it
6. Go to the settings and find Block cookie consent notices toggle switch` > Verify
7. Uninstall Brave and repeat Steps 1 - 6, but this time keep the toggle enabled > Verify

ACTUAL RESULTS:

• Verified that Block cookie consent notices toggle switch is shown in the Settings > Brave Shields & privacy > Under Other privacy settings after upgrade
• Verified that the Block cookie consent notices toggle switch respects its previous position after the Brave upgrade

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2023-10-02_13-29-29.mp4