@KAUPPINEN Miro Thanks for reaching out. From the description I understand that you need to keep your APIM configuration clean and organized, and I you wanted to avoid auto-generated schema definitions for query parameters.
Unfortunately, the auto-generation of schema definitions for query parameters is a default behavior in APIM and is by design. There is currently no way to turn off this behavior.
While I understand that this may not be ideal for your specific use case, it's important to note that the auto-generated schema definitions are intended to provide a consistent and standardized way of defining the data types and formats of query parameters across all APIs in your organization. This helps to ensure that APIs are properly documented and that clients can easily understand how to interact with them.
feel free to leave your feedback at aka.ms/apimwish. do let me know incase of further queries, I would be happy to assist you.