Remove the type constraint on sincosd (#41021)

Co-authored-by: Jameson Nash <[email protected]>
Co-authored-by: Steven G. Johnson <[email protected]>

base/special/trig.jl

@@ -1254,17 +1254,9 @@ Simultaneously compute the sine and cosine of `x`, where `x` is in degrees.
 !!! compat "Julia 1.3"
     This function requires at least Julia 1.3.
 """
-function sincosd(x::Real)
-    if isinf(x)
-        return throw(DomainError(x, "sincosd(x) is only defined for finite `x`."))
-    elseif isnan(x)
-        return (oftype(x,NaN), oftype(x,NaN))
-    end
-
-    # It turns out that calling those functions separately yielded better
-    # performance than considering each case and calling `sincos_kernel`.
-    return (sind(x), cosd(x))
-end
+sincosd(x) = (sind(x), cosd(x))
+# It turns out that calling these functions separately yields better
+# performance than considering each case and calling `sincos_kernel`.
 
 sincosd(::Missing) = (missing, missing)