Revert unneeded test changes

Author: brianrourkeboll

tests/FSharp.Compiler.ComponentTests/Conformance/Constraints/Unmanaged.fs

@@ -95,7 +95,7 @@ test (ValueSome (struct {|Field = Some 42|}))
         |> withDiagnostics [
                 Error 1, Line 3, Col 17, Line 3, Col 22, "A generic construct requires that the type 'string' is an unmanaged type"
                 Error 1, Line 4, Col 28, Line 4, Col 33, "A generic construct requires that the type 'string' is an unmanaged type"
-                Error 1, Line 5, Col 18, Line 5, Col 44, "A generic construct requires that the type 'int option' is an unmanaged type" ]
+                Error 1, Line 5, Col 18, Line 5, Col 44, "A generic construct requires that the type ''a option' is an unmanaged type" ]
 
     [<Fact>]
     let ``Option not considered unmanaged`` () = 

tests/FSharp.Compiler.ComponentTests/Language/Nullness/NullableReferenceTypesTests.fs

@@ -1012,7 +1012,7 @@ myNullReturningFunction myValOfY                     |> ignore
     |> withDiagnostics     
                 [Error 3261, Line 17, Col 25, Line 17, Col 34, "Nullness warning: The type 'string' does not support 'null'."
                  Error 193, Line 19, Col 26, Line 19, Col 45, "The type 'System.DateTime' does not have 'null' as a proper value"
-                 Error 1, Line 20, Col 25, Line 20, Col 36, "The type '{| Anon: int |}' does not have 'null' as a proper value"
+                 Error 1, Line 20, Col 25, Line 20, Col 36, "The type '{| Anon: 'a |}' does not have 'null' as a proper value"
                  Error 1, Line 21, Col 26, Line 21, Col 31, "The type ''a * 'b * 'c' does not have 'null' as a proper value"
                  Error 1, Line 23, Col 25, Line 23, Col 33, "The type 'Y' does not have 'null' as a proper value"]