Steps to reproduce:
1. Open the attached user's project "1706984-Texture Importer Server settings.zip"
2. In the Project Window, navigate to "Assets/unnamed.jpg" and open in Explorer
3. Open "unnamed.jpg.meta" via Text Editor and search for "Server" entry

Expected Result: The "platformSettings" array contains only an entry for "DefaultTexturePlatform" and "Standalone"
Actual Result: The array contains an entry for "Server"

Reproducible with: 2021.3.32f1, 2022.3.14f1
Not reproducible on: 2023.2.0f1, 2023.3.0a14

Testing Environment: Windows 10
Not reproducible on: No other environment tested

Notes:
-After upgrading from 2020 to 2021, the customer has found that the editor now has the non-optional build target of "Server". This is problematic as it causes the Texture Importer to add a "platformSettings" for this target even if the settings are not overridden for this platform and the platform is never used.
-The result is that all of their texture .meta files contain additional delta and bloat which is causing pain in their version control (added delta, added storage overhead)