Remove unused methods that had unnecessary version checks

app/src/main/java/com/geeksville/mesh/android/BuildUtils.kt

@@ -23,19 +23,6 @@ import android.os.Build
  * Created by kevinh on 1/14/16.
  */
 object BuildUtils : Logging {
-
-    fun is64Bit(): Boolean {
-        if (Build.VERSION.SDK_INT < 21)
-            return false
-        else
-            return Build.SUPPORTED_64_BIT_ABIS.size > 0
-    }
-
-    fun isBuggyMoto(): Boolean {
-        debug("Device type is: ${Build.DEVICE}")
-        return Build.DEVICE == "osprey_u2" // Moto G
-    }
-
     // Are we running on the emulator?
     val isEmulator
         get() = Build.FINGERPRINT.startsWith("generic") ||