Fixed ability to change drive location

[v72nico]

Description

Please include a summary of the change and which issue is fixed (if available).
Please also include relevant motivation and context.

Fixes the ability to change the path of a drive in a bottle. Works by removing the symlink before adding a new changed symlink to prevent errors.

Fixes #(issue)

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes.
Provide instructions so we can reproduce.

• Test A

1. Change directory of drive
2. Error appears "Drive a: already exists in the bottle, no drive added"

• Test B

1. Change directory of drive
2. No error appears and directory changes.

[github-actions]

Pylint result on modfied files:

************* Module bottles.frontend.windows.drives
bottles/frontend/windows/drives.py:23:0: W1405: Quote delimiter ' is inconsistent with the rest of the file (inconsistent-quotes)
bottles/frontend/windows/drives.py:25:0: W1405: Quote delimiter ' is inconsistent with the rest of the file (inconsistent-quotes)
bottles/frontend/windows/drives.py:90:0: W1405: Quote delimiter ' is inconsistent with the rest of the file (inconsistent-quotes)
bottles/frontend/windows/drives.py:92:0: W1405: Quote delimiter ' is inconsistent with the rest of the file (inconsistent-quotes)
bottles/frontend/windows/drives.py:18:0: E0611: No name 'Adw' in module 'gi.repository' (no-name-in-module)
bottles/frontend/windows/drives.py:24:0: R0903: Too few public methods (0/2) (too-few-public-methods)
bottles/frontend/windows/drives.py:138:8: C0206: Consider iterating with .items() (consider-using-dict-items)
bottles/frontend/windows/drives.py:91:0: R0903: Too few public methods (1/2) (too-few-public-methods)