Remove Gemfiles for Rails 6 and less (TECH-17268_bump_appraisals)

[ttstarck]

Changes

• Remove Rails 6 gemfiles

_{This PR was generated using turbolift.}

[coveralls]

Pull Request Test Coverage Report for Build 13423737035

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 13063525246:	0.0%
Covered Lines:	30
Relevant Lines:	30

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💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 13423737035

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

---

Totals
Change from base Build 13063525246:	0.0%
Covered Lines:	30
Relevant Lines:	30

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 13423795144

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

---

Totals
Change from base Build 13063525246:	0.0%
Covered Lines:	30
Relevant Lines:	30

---

💛 - Coveralls