Unnecessary file_windows.go

[manuelbuil]

Environmental Info:
K3s Version:

Node(s) CPU architecture, OS, and Version:

Cluster Configuration:

Describe the bug:

k3s contains two files which do exactly the same but one is only included in windows builds and the other in linux builds:

• /pkg/util/file.go (linux)
• /pkg/util/file_windows.go (windows)

There is no need for that because all calls work for both linux and windows (e.g. os.chmod), so we can just use one file for both OS

Steps To Reproduce:

• Installed K3s:

Expected behavior:

Actual behavior:

Additional context / logs:

[manuelbuil]

Closing as there is nothing to test