delete useless

Author: anyshu

tools/server/server-diffusion.cpp

@@ -1644,7 +1644,6 @@ struct server_slot {
     int32_t n_draft_accepted = 0;   // Draft tokens actually accepted
 
     // Diffusion-specific fields
-    bool is_diffusion_task = false;
     std::vector<llama_token> diffusion_output_tokens;
 
     void reset() {
@@ -1675,7 +1674,6 @@ struct server_slot {
         n_draft_accepted = 0;
 
         // clear diffusion fields
-        is_diffusion_task = false;
         diffusion_output_tokens.clear();
 
         // clear alora start
@@ -2671,7 +2669,6 @@ struct server_context {
 
         // Handle diffusion-specific initialization
         if (slot.task_type == SERVER_TASK_TYPE_DIFFUSION) {
-            slot.is_diffusion_task = true;
             // Prepare diffusion output tokens buffer
             slot.diffusion_output_tokens.resize(slot.params.diffusion_max_length);
         }