qtwebview-opensource-src is marked for autoremoval from testing

[Debian testing autoremoval watch]

qtwebview-opensource-src 5.11.1-2 is marked for autoremoval from testing on 
2018-10-08

It is affected by these RC bugs:
907249: qml-module-qtwebview: "No WebView plug-in found!" when -dev packages 
are not installed