Revert "change {String|Bytes|Array}View to @{string|bytes|array}.View"

[bobzhang]

Reverts #1576

[coveralls]

Pull Request Test Coverage Report for Build 5128

Details

• 34 of 47 (72.34%) changed or added relevant lines in 5 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.2%) to 85.865%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
builtin/bytes.mbt	0	3	0.0%
builtin/arrayview.mbt	23	33	69.7%

Totals
Change from base Build 5127:	-0.2%
Covered Lines:	5279
Relevant Lines:	6148

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💛 - Coveralls

[bobzhang]

Note the compiler hardcoded BytesView in Basic_type_path, so we can not move BytesView from builtin to bytes without changes from upstream see #1581
cc @Yu-zh