refactor(common)!: drop deprecated misspelled constant CUSTOM_ROUTE_AGRS_METADATA

[micalevisk]

I'm not sure if we will drop the deprecated methods on core/metadata-scanner.ts in v10

nest/packages/core/metadata-scanner.ts

Lines 12 to 16 in bee462e

	* @deprecated
	* @see {@link getAllMethodNames}
	* @see getAllMethodNames
	*/
	public scanFromPrototype<T extends Injectable, R = any>(

Does this PR introduce a breaking change?

• Yes
• No

[coveralls]

Pull Request Test Coverage Report for Build be8c3234-096b-4f53-b7df-2368e0c49079

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.001%) to 92.996%

---

Totals
Change from base Build f1f54939-2381-4e11-8dbf-87dd557b7b30:	-0.001%
Covered Lines:	6267
Relevant Lines:	6739

---

💛 - Coveralls

[micalevisk]

I can't tell why the pipeline is failing:

[Tony133]

The CI fails, but it is not related to the change you made.

But if you make the switch on the master branch, does the CI fail? (This is just an experiment 😄)

For core/metadata-scanner.ts, best to ask Kamil since it's about the part "Core"

[kamilmysliwiec]

I'm aware of this error - we can ignore it for this PR :) LGTM

[micalevisk]

@ihazar please report that to @nestjsx/crud-typeorm, it doesn't seems to be related tho this PR