remove unused fields and functions

llm/llama.go

 package llm
 
 import (
-	"bytes"
-	"context"
 	_ "embed"
-	"errors"
 	"fmt"
-	"os"
-	"os/exec"
 	"time"
 
 	"github.com/jmorganca/ollama/api"
-	"github.com/jmorganca/ollama/format"
 )
 
 const jsonGrammar = `
@@ -42,51 +36,12 @@ number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? ws
 ws ::= ([ \t\n] ws)?
 `
 
-type Running struct {
-	Port          int
-	Cmd           *exec.Cmd
-	Cancel        context.CancelFunc
-	*StatusWriter // captures error messages from the llama runner process
-}
-
 type ImageData struct {
 	Data []byte `json:"data"`
 	ID   int    `json:"id"`
 }
 
-var (
-	errNvidiaSMI     = errors.New("warning: gpu support may not be enabled, check that you have installed GPU drivers: nvidia-smi command failed")
-	errAvailableVRAM = errors.New("not enough VRAM available, falling back to CPU only")
-	payloadMissing   = fmt.Errorf("expected dynamic library payloads not included in this build of ollama")
-)
-
-// StatusWriter is a writer that captures error messages from the llama runner process
-type StatusWriter struct {
-	ErrCh      chan error
-	LastErrMsg string
-}
-
-func NewStatusWriter() *StatusWriter {
-	return &StatusWriter{
-		ErrCh: make(chan error, 1),
-	}
-}
-
-func (w *StatusWriter) Write(b []byte) (int, error) {
-	var errMsg string
-	if _, after, ok := bytes.Cut(b, []byte("error:")); ok {
-		errMsg = string(bytes.TrimSpace(after))
-	} else if _, after, ok := bytes.Cut(b, []byte("CUDA error")); ok {
-		errMsg = string(bytes.TrimSpace(after))
-	}
-
-	if errMsg != "" {
-		w.LastErrMsg = errMsg
-		w.ErrCh <- fmt.Errorf("llama runner: %s", errMsg)
-	}
-
-	return os.Stderr.Write(b)
-}
+var payloadMissing = fmt.Errorf("expected dynamic library payloads not included in this build of ollama")
 
 type prediction struct {
 	Content string `json:"content"`
@@ -102,9 +57,7 @@ type prediction struct {
 	}
 }
 
-const maxBufferSize = 512 * format.KiloByte
 const maxRetries = 3
-const retryDelay = 1 * time.Second
 
 type PredictOpts struct {
 	Prompt  string