remove unused code

Author: joreilly

backend/service-import/src/jvmMain/kotlin/dev/johnoreilly/confetti/backend/import/DroidconItaly2025.kt

@@ -228,55 +228,4 @@ object DroidconItaly2025 {
         error("CSV file not found. Tried: ${candidates.joinToString()}")
     }
 
-    // Minimal CSV parser supporting quoted fields with commas and newlines and escaped quotes ""
-    private fun parseCsv(input: String): List<List<String>> {
-        val rows = mutableListOf<MutableList<String>>()
-        var current = StringBuilder()
-        var row = mutableListOf<String>()
-        var inQuotes = false
-        var i = 0
-        while (i < input.length) {
-            val ch = input[i]
-            when (ch) {
-                '"' -> {
-                    if (inQuotes) {
-                        if (i + 1 < input.length && input[i + 1] == '"') {
-                            // Escaped quote
-                            current.append('"')
-                            i++
-                        } else {
-                            inQuotes = false
-                        }
-                    } else {
-                        inQuotes = true
-                    }
-                }
-                ',' -> {
-                    if (inQuotes) {
-                        current.append(ch)
-                    } else {
-                        row.add(current.toString())
-                        current = StringBuilder()
-                    }
-                }
-                '\r' -> { /* ignore CR; handle on LF */ }
-                '\n' -> {
-                    if (inQuotes) {
-                        current.append('\n')
-                    } else {
-                        row.add(current.toString())
-                        rows.add(row)
-                        row = mutableListOf()
-                        current = StringBuilder()
-                    }
-                }
-                else -> current.append(ch)
-            }
-            i++
-        }
-        // Append last field
-        row.add(current.toString())
-        rows.add(row)
-        return rows
-    }
 }