Remove .unwrap() uses in test-suite/ test codes,

[panarch]

Change "async move {..}" test case declaration code to use simple "{..}".
Then, we can replace .unwrap() to ?.

[coveralls]

Pull Request Test Coverage Report for Build 5840391269

• 145 of 316 (45.89%) changed or added relevant lines in 87 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.3%) to 98.857%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
test-suite/src/data_type/decimal.rs	2	3	66.67%
test-suite/src/function/ascii.rs	2	3	66.67%
test-suite/src/function/chr.rs	2	3	66.67%
test-suite/src/function/values.rs	1	2	50.0%
test-suite/src/show_columns.rs	0	1	0.0%
test-suite/src/type_match.rs	1	2	50.0%
test-suite/src/validate/types.rs	3	4	75.0%
test-suite/src/aggregate/avg.rs	0	2	0.0%
test-suite/src/aggregate/count.rs	0	2	0.0%
test-suite/src/aggregate/error.rs	0	2	0.0%

Totals
Change from base Build 5840104161:	-0.3%
Covered Lines:	47237
Relevant Lines:	47783

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💛 - Coveralls