removing the helper QuotedPrintable class, it is no longer needed

app/src/main/kotlin/com/simplemobiletools/contacts/pro/helpers/QuotedPrintable.kt

@@ -1,64 +0,0 @@
-package com.simplemobiletools.contacts.pro.helpers
-
-import java.io.ByteArrayOutputStream
-import java.net.URLEncoder
-
-// https://alvinalexander.com/java/jwarehouse/android/core/java/com/google/android/mms/pdu/QuotedPrintable.java.shtml
-object QuotedPrintable {
-    private const val ESCAPE_CHAR: Byte = '='.toByte()
-    fun decode(value: String?): String {
-        val bytes = value?.toByteArray()
-        if (bytes == null || bytes.isEmpty()) {
-            return ""
-        }
-
-        val buffer = ByteArrayOutputStream()
-        var i = 0
-        while (i < bytes.size) {
-            val b = bytes[i].toInt()
-            if (b == ESCAPE_CHAR.toInt()) {
-                try {
-                    if ('\r' == bytes[i + 1].toChar() && '\n' == bytes[i + 2].toChar()) {
-                        i += 3
-                        continue
-                    }
-
-                    val u = Character.digit(bytes[++i].toChar(), 16)
-                    val l = Character.digit(bytes[++i].toChar(), 16)
-                    if (u == -1 || l == -1) {
-                        return ""
-                    }
-
-                    buffer.write(((u shl 4) + l).toChar().toInt())
-                } catch (e: ArrayIndexOutOfBoundsException) {
-                    return ""
-                }
-
-            } else {
-                buffer.write(b)
-            }
-            i++
-        }
-        return String(buffer.toByteArray())
-    }
-
-    fun encode(value: String): String {
-        val result = StringBuilder()
-        value.forEach {
-            if (it == ' ') {
-                result.append(' ')
-            } else {
-                val urlEncoded = urlEncode(it.toString())
-                if (urlEncoded == it.toString()) {
-                    val hex = String.format("%04x", it.toInt()).trimStart('0').toUpperCase()
-                    result.append("=$hex")
-                } else {
-                    result.append(urlEncoded)
-                }
-            }
-        }
-        return result.toString()
-    }
-
-    fun urlEncode(value: String) = URLEncoder.encode(value, "UTF-8").replace("+", " ").replace('%', '=')
-}