Remove unused plain text prompt generation method from PromptGenerator

src/utils/promptGenerator.ts

@@ -107,31 +107,6 @@ export class PromptGenerator {
         return this.generateXMLPrompt(filteredContents, settings);
     }
 
-    /**
-     * Generate a plain text prompt
-     * @param files Map of file paths to content and token counts
-     * @param settings Settings to apply
-     * @returns Plain text prompt
-     */
-    private static generatePlainPrompt(files: Map<string, { content: string; tokens: number }>, settings: PrompterSettings): string {
-        let promptText = '';
-        let totalTokenCount = 0;
-        
-        for (const [filePath, { content, tokens }] of files) {
-            const fileName = path.basename(filePath);
-            totalTokenCount += tokens;
-            
-            promptText += `File: ${fileName}\n`;
-            promptText += `${content}\n`;
-            promptText += '\n';
-        }
-        
-        if (settings.tokenCalculationEnabled) {
-            promptText += `\nEstimated token count: ${totalTokenCount}`;
-        }
-        
-        return promptText;
-    }
 
     /**
      * Generate an XML formatted prompt following the new schema format