embedding_layer: remove gradient attribute

Author: OneAdder

src/nf/nf_embedding_layer.f90

@@ -18,7 +18,6 @@ module nf_embedding_layer
 
     real, allocatable :: weights(:, :)
     real, allocatable :: output(:, :)
-    real, allocatable :: gradient(:, :) ! input gradient
     real, allocatable :: dw(:, :) ! weight gradients
 
   contains

src/nf/nf_embedding_submodule.f90 src/nf/nf_embedding_layer_submodule.f90src/nf/nf_embedding_submodule.f90 renamed to src/nf/nf_embedding_layer_submodule.f90

@@ -17,7 +17,6 @@ module subroutine init(self, input_shape)
     self % sequence_length = input_shape(1)
 
     allocate(self % output(self % sequence_length, self % model_dimension))
-    allocate(self % gradient(self % sequence_length, self % vocab_size))
 
     allocate(self % weights(self % vocab_size, self % model_dimension))
     self % weights = 0.1