PR: Remove install scripts because they're no longer needed (Update manager)

[ccordoba12]

Description of Changes

• Those scripts were moved to Spyder-updater: https://github.com/spyder-ide/spyder-updater/tree/main/src/spyder_updater/scripts
• I forgot about that in my review of PR: Use spyder-updater to handle updates (Installers) #24144.

Issue(s) Resolved

Fixes #

Affirmation

By submitting this Pull Request or typing my (user)name below,
I affirm the Developer Certificate of Origin
with respect to all commits and content included in this PR,
and understand I am releasing the same under Spyder's MIT (Expat) license.

I certify the above statement is true and correct: @ccordoba12

[mrclary]

@ccordoba12, these scripts are still used to install major updates, i.e. downloading and launching the package installers.

However, much of the scripts can be trimmed out. This is also the case for the (identical) scripts in the Spyder-updater. It was my plan to clean these up further in another PR.

I would recommend closing this PR.

[mrclary]

spyder/spyder/plugins/updatemanager/widgets/update.py

Lines 476 to 481 in 2193e4d

	def _start_major_install(self):
	"""Install major update from downloaded installer"""
	# Install script
	# Copy to temp location to be safe
	script_name = 'install.' + ('bat' if os.name == 'nt' else 'sh')
	script_path = osp.abspath(__file__ + '/../../scripts/' + script_name)

[ccordoba12]

these scripts are still used to install major updates, i.e. downloading and launching the package installers.

Ok, I wasn't aware of that.

I would recommend closing this PR.

Ok, closing then.