requested code review changes

lib/system.nim

@@ -98,17 +98,6 @@ type
   SomeNumber* = SomeInteger|SomeReal
     ## type class matching all number types
 
-  T1* = auto
-  T2* = auto
-  T3* = auto
-  T4* = auto
-  T5* = auto
-  T6* = auto
-  T7* = auto
-  T8* = auto
-  T9* = auto
-    ## Helper types for writing implicitly generic procs
-
 proc defined*(x: untyped): bool {.magic: "Defined", noSideEffect, compileTime.}
   ## Special compile-time procedure that checks whether `x` is
   ## defined.