Revert "chat api (#991)" while context variable is fixed

This reverts commit 7a0899d62d.

server/images_test.go

@@ -2,15 +2,17 @@ package server
 
 import (
 	"testing"
+
+	"github.com/jmorganca/ollama/api"
 )
 
 func TestModelPrompt(t *testing.T) {
-	m := Model{
+	var m Model
+	req := api.GenerateRequest{
 		Template: "a{{ .Prompt }}b",
+		Prompt:   "<h1>",
 	}
-	s, err := m.Prompt(PromptVars{
-		Prompt: "<h1>",
-	})
+	s, err := m.Prompt(req)
 	if err != nil {
 		t.Fatal(err)
 	}