fix: remove duplicate AppInfo data class causing build failure

Build Error Fixed:
- Removed duplicate AppInfo declaration in SystemModels.kt
- AppInfo is already defined in AppModels.kt with correct fields
- This caused Kotlin compilation error: "Redeclaration: AppInfo"

Root Cause:
- During optimization, accidentally added AppInfo to SystemModels.kt
- AppInfo should only be in AppModels.kt (app-related models)
- SystemModels.kt should only contain system stats models

Files Modified:
- app/src/main/java/com/appcontrolx/model/SystemModels.kt
  - Removed duplicate AppInfo data class
  - Kept SystemStats and related system models

Build Status:
- Kotlin compilation should now succeed
- No more redeclaration errors
- All models properly separated

Author: risunCode

app/src/main/java/com/appcontrolx/model/SystemModels.kt

@@ -2,22 +2,6 @@ package com.appcontrolx.model
 
 import kotlinx.serialization.Serializable
 
-@Serializable
-data class AppInfo(
-    val packageName: String,
-    val appName: String,
-    val iconBase64: String? = null, // Nullable for lazy loading
-    val versionName: String,
-    val isSystemApp: Boolean,
-    val isEnabled: Boolean,
-    val isRunning: Boolean,
-    val isFrozen: Boolean,
-    val isBackgroundRestricted: Boolean,
-    val size: Long,
-    val uid: Int,
-    val safetyLevel: SafetyLevel
-)
-
 @Serializable
 data class SystemStats(
     val cpu: CpuStats,