Remove widgets and supporting code

[bbondy]

• Remove FTX widget (already disabled for the whole user base but removing the rest of the code)
• Remove Binance widget
• Remove crypto.com widget
• Remove Gemini widget
• Remove suggested sites (disabled by default and not used)

[bbondy]

FYI @rebron

[srirambv]

Verification passed on

Brave	1.48.155 Chromium: 110.0.5481.77 (Official Build) (64-bit)
Revision	65ed616c6e8ee3fe0ad64fe83796c020644d42af-refs/branch-heads/5481@{#839}
OS	Linux

• Verified steps from brave/brave-core#16027
• Verified widgets are removed post update
• Verified Suggested Sites setting is also removed post update
• Verified on a clean profile there are no widgets available and Suggested Sites settings is not available

26865.mp4

---

Verification passed on

Brave	1.48.155 Chromium: 110.0.5481.77 (Official Build) (64-bit)
Revision	65ed616c6e8ee3fe0ad64fe83796c020644d42af-refs/branch-heads/5481@{#839}
OS	Windows 11 Version 22H2 (Build 22621.755)

• Verified steps from brave/brave-core#16027
• Verified widgets are removed post update
• Verified Suggested Sites setting is also removed post update
• Verified on a clean profile there are no widgets available and Suggested Sites settings is not available

---

Verification passed on

Brave	1.48.155 Chromium: 110.0.5481.77 (Official Build) (arm64)
Revision	65ed616c6e8ee3fe0ad64fe83796c020644d42af-refs/branch-heads/5481@{#839}
OS	macOS Version 13.0 (Build 22A380)

• Verified steps from brave/brave-core#16027
• Verified widgets are removed post update
• Verified Suggested Sites setting is also removed post update
• Verified on a clean profile there are no widgets available and Suggested Sites settings is not available

26865.mp4

[Uni-verse]

Verified on Samsung GS 21 using version:

Brave	1.48.157 Chromium: 110.0.5481.77 (Official Build) (64-bit) 
Revision	65ed616c6e8ee3fe0ad64fe83796c020644d42af-refs/branch-heads/5481@{#839}
OS	Android 13; Build/TP1A.220624.014

• Ensured the setting show suggested sites in autocomplete is removed on fresh profile
• Ensured the setting suggested sites setting is removed on upgraded profile
• Ensured suggested sites are not shown in the search content area on 1.48.157 if setting was enabled in previous version

1.47.x	1.48.157