Drop `--wasi preview2` from `wasi.py`

[brettcannon]

Bug report

Bug description:

Need to remove

cpython/Tools/wasm/wasi.py

Lines 300 to 301 in 23f2e8f

	# Use WASI 0.2 primitives.
	"--wasi preview2 "

as we only officially support preview1.

CPython versions tested on:

CPython main branch

Operating systems tested on:

Other

Linked PRs

• GH-127652: stop using --wasi preview2 in wasi.py #127704

[rruuaanng]

Do we need to fix it to --wasi preview1?, or just remove it --wasi preview2.

[brettcannon]

Do we need to fix it to --wasi preview1?, or just remove it --wasi preview2.

There is no --wasi preview1 flag; this is just to remove the flag as it's not necessary and is technically experimental (see the PR I just posted).

[brettcannon]

The automatic backport to 3.13 failed, but since this is an optional change I'm not going to worry about it.