Revert "Permit throwaway parameters (#10209)"

[rainersigwald]

This reverts commit 9f69926, to fix #10435.

[rainersigwald]

This was a clean revert except for the XLF files which I reverted, built, and checked that back in.

[Forgind]

😭

[rainersigwald]

Merging on red due to urgency; failure was CanceledTasksDoNotLogMSB4181

Shouldly.ShouldAssertException : isSubmissionComplated\r\n    should be\r\nTrue\r\n    but was\r\nFalse\r\n\r\nAdditional Info:\r\n    Waiting for that the build submission is completed failed in the timeout period 2000 ms.

   at Microsoft.Build.UnitTests.BackEnd.TaskBuilder_Tests.CanceledTasksDoNotLogMSB4181() in D:\a\1\s\src\Build.UnitTests\BackEnd\TaskBuilder_Tests.cs:line 190
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
   at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Object obj, BindingFlags invokeAttr)