QML cache prevents starting up emulator after version update

Steps to reproduce:

1. Install Qt 5.10.0 RC1 and select component "Qt for Device Creation"/"Boot to Qt Software Stack 5.10.0"/Emulator
   • Contains emulator version 3.0.0
2. Start emulator and let it boot
3. Install Qt 5.10.0 RC2
   • Contains emulator version 3.0.1
4. Start emulator

Expected outcome:

• Emulator is started normally

Actual outcome:

• Only control window is shown, emulator output window is not

Workaround:

• Remove qml cache files
  • cd ~/Qt/Tools/emulator3/bin/models
  • find . -name "*qmlc" -exec rm {} \;