Remove comments for LWG-4245 Operators that interact with `counted_iterator` and `default_sentinel_t` should be `noexcept`

[frederick-vs-ja]

LWG-4245 Operators that interact with counted_iterator and default_sentinel_t should be noexcept

Per WG21-P3742R0 (alternative link), LWG-4245 was resolved in the June 2025 meeting. LWG-4245 specifies operators between counted_iterator and default_sentinel_t to be noexcept, and MSVC STL has already added noexcept with /* strengthened */ comments.

As these occurrences of noexcept are to become mandatory, these /* strengthened */ comments should be removed.

STL/stl/inc/iterator

Lines 1314 to 1317 in 7841cf8

	_NODISCARD friend constexpr iter_difference_t<_Iter> operator-(
	const counted_iterator& _Left, default_sentinel_t) noexcept /* strengthened */ {
	return -_Left._Length;
	}

STL/stl/inc/iterator

Lines 1319 to 1322 in 7841cf8

	_NODISCARD friend constexpr iter_difference_t<_Iter> operator-(
	default_sentinel_t, const counted_iterator& _Right) noexcept /* strengthened */ {
	return _Right._Length;
	}

STL/stl/inc/iterator

Lines 1345 to 1348 in 7841cf8

	_NODISCARD friend constexpr bool operator==(const counted_iterator& _Left, default_sentinel_t) noexcept
	/* strengthened */ {
	return _Left._Length == 0;
	}

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[saishreyakumar]

Hi, I can start working on this issue, will put a PR shortly