Remove rules for conj, adjoint, and transpose

Author: devmotion

src/rules.jl

@@ -67,9 +67,6 @@
 @define_diffrule SpecialFunctions.loggamma(x) =
     :(  SpecialFunctions.digamma($x)  )
 
-@define_diffrule Base.conj(x)                 = :(  1                                  )
-@define_diffrule Base.adjoint(x)              = :(  1                                  )
-@define_diffrule Base.transpose(x)            = :(  1                                  )
 @define_diffrule Base.abs(x)                  = :( DiffRules._abs_deriv($x)            )
 
 # We provide this hook for special number types like `Interval`