remove dependence on system isodrive bin, instead use bundled bin

app/src/main/java/sh/sar/isodroid/isodrive/IsoDriveManager.kt

@@ -58,42 +58,14 @@ class IsoDriveManager(private val context: Context) {
                 binaryPath = targetFile.absolutePath
                 true
             } catch (e: Exception) {
-                // Binary not bundled yet, will use system isodrive if available
-                checkSystemBinary()
+                // Binary extraction failed
+                false
             }
         } catch (e: Exception) {
             false
         }
     }
 
-    private suspend fun checkSystemBinary(): Boolean = withContext(Dispatchers.IO) {
-        // Check common locations first (more reliable than 'which')
-        val commonPaths = listOf(
-            "/data/adb/modules/isodrive-magisk/system/bin/isodrive",
-            "/data/adb/modules/isodrive/system/bin/isodrive",
-            "/system/bin/isodrive",
-            "/system/xbin/isodrive",
-            "/data/local/tmp/isodrive",
-            "/vendor/bin/isodrive"
-        )
-        for (path in commonPaths) {
-            val checkResult = RootManager.executeCommand("test -f $path && echo exists")
-            if (checkResult.success && checkResult.output.contains("exists")) {
-                binaryPath = path
-                return@withContext true
-            }
-        }
-
-        // Try 'which' as fallback
-        val result = RootManager.executeCommand("which isodrive 2>/dev/null")
-        if (result.success && result.output.isNotBlank()) {
-            binaryPath = result.output.trim()
-            return@withContext true
-        }
-
-        false
-    }
-
     suspend fun isSupported(): SupportStatus = withContext(Dispatchers.IO) {
         // First check if binary is available
         if (binaryPath == null && !extractBinary()) {