[CodeCompletion] Migrate some tests to batch completion test #4

[rintaro]

21.05s: Swift(macosx-x86_64) :: IDE/complete_call_arg.swift
10.04s: Swift(macosx-x86_64) :: IDE/complete_where_clause.swift
9.82s: Swift(macosx-x86_64) :: IDE/complete_from_stdlib.swift
9.60s: Swift(macosx-x86_64) :: IDE/complete_constructor.swift
8.98s: Swift(macosx-x86_64) :: IDE/complete_enum_elements.swift
7.78s: Swift(macosx-x86_64) :: IDE/complete_value_literals.swift
0.53s: Swift(macosx-x86_64) :: IDE/complete_value_expr_call_pattern_heuristics.swift

to

1.44s: Swift(macosx-x86_64) :: IDE/complete_call_arg.swift
1.28s: Swift(macosx-x86_64) :: IDE/complete_from_stdlib.swift
0.80s: Swift(macosx-x86_64) :: IDE/complete_enum_elements.swift
0.78s: Swift(macosx-x86_64) :: IDE/complete_constructor.swift
0.48s: Swift(macosx-x86_64) :: IDE/complete_where_clause.swift
0.42s: Swift(macosx-x86_64) :: IDE/complete_value_literals.swift
0.25s: Swift(macosx-x86_64) :: IDE/complete_call_pattern_heuristics.swift

see also:
#36714 #36715 #36716

[rintaro]

@swift-ci Please smoke test

[rintaro]

@swift-ci Please smoke test Windows

[rintaro]

@swift-ci Please smoke test

[atrick]

@rintaro PR testing is blocked on this failure because this was only smoke tested
Swift(iphonesimulator-x86_64).IDE.complete_where_clause.swift

Should this be an XFAIL or PR revert?

[tkremenek]

This PR should be reverted. Reverting.