Remove sorting in arguments function

src/types.jl

@@ -116,25 +116,15 @@ end
 
 @inline head(x::BasicSymbolic) = operation(x)
 
+"""
+$(TYPEDSIGNATURES)
+
+Returns the arguments of `x` without sorting them.
+
+This function must be defined if `iscall(x)` is `true`.
+"""
 function arguments(x::BasicSymbolic)
     args = unsorted_arguments(x)
-    @compactified x::BasicSymbolic begin
-        Add => @goto ADD
-        Mul => @goto MUL
-        _   => return args
-    end
-    @label MUL
-    if !x.issorted[]
-        sort!(args, by=get_degrees)
-        x.issorted[] = true
-    end
-    return args
-
-    @label ADD
-    if !x.issorted[]
-        sort!(args, lt = monomial_lt, by=get_degrees)
-        x.issorted[] = true
-    end
     return args
 end