Android: Fix removing of no longer valid kits
Android: Fix removing of no longer valid kits

Changing the ndk directory will remove the toolchains. That means some
existing kits might be without a toolchain, we need to handle those too.

Change-Id: I02789550acc4dd16591a87c768c2bddecb4b6e80
Reviewed-by: Tobias Hunger <012f8d714267bccc9d4766fbeace9f175fcc70c4@digia.com>

duythanhphan/qt-creator,martyone/sailfish-qtcreator,darksylinc/qt-creator,darksylinc/qt-creator,colede/qtcreator,duythanhphan/qt-creator,kuba1/qtcreator,martyone/sailfish-qtcreator,maui-packages/qt-creator,amyvmiwei/qt-creator,danimo/qt-creator,Distrotech/qtcreator,kuba1/qtcreator,xianian/qt-creator,martyone/sailfish-qtcreator,xianian/qt-creator,farseerri/git_code,omniacreator/qtcreator,amyvmiwei/qt-creator,amyvmiwei/qt-creator,maui-packages/qt-creator,duythanhphan/qt-creator,Distrotech/qtcreator,xianian/qt-creator,kuba1/qtcreator,Distrotech/qtcreator,colede/qtcreator,kuba1/qtcreator,xianian/qt-creator,malikcjm/qtcreator,darksylinc/qt-creator,kuba1/qtcreator,danimo/qt-creator,maui-packages/qt-creator,darksylinc/qt-creator,omniacreator/qtcreator,Distrotech/qtcreator,farseerri/git_code,martyone/sailfish-qtcreator,AltarBeastiful/qt-creator,richardmg/qtcreator,danimo/qt-creator,AltarBeastiful/qt-creator,amyvmiwei/qt-creator,maui-packages/qt-creator,kuba1/qtcreator,colede/qtcreator,Distrotech/qtcreator,darksylinc/qt-creator,danimo/qt-creator,Distrotech/qtcreator,maui-packages/qt-creator,AltarBeastiful/qt-creator,farseerri/git_code,AltarBeastiful/qt-creator,colede/qtcreator,colede/qtcreator,malikcjm/qtcreator,amyvmiwei/qt-creator,malikcjm/qtcreator,duythanhphan/qt-creator,amyvmiwei/qt-creator,maui-packages/qt-creator,maui-packages/qt-creator,kuba1/qtcreator,richardmg/qtcreator,xianian/qt-creator,darksylinc/qt-creator,danimo/qt-creator,kuba1/qtcreator,richardmg/qtcreator,farseerri/git_code,martyone/sailfish-qtcreator,farseerri/git_code,martyone/sailfish-qtcreator,omniacreator/qtcreator,colede/qtcreator,danimo/qt-creator,omniacreator/qtcreator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,duythanhphan/qt-creator,richardmg/qtcreator,omniacreator/qtcreator,omniacreator/qtcreator,xianian/qt-creator,xianian/qt-creator,malikcjm/qtcreator,martyone/sailfish-qtcreator,xianian/qt-creator,malikcjm/qtcreator,AltarBeastiful/qt-creator,amyvmiwei/qt-creator,amyvmiwei/qt-creator,xianian/qt-creator,Distrotech/qtcreator,kuba1/qtcreator,farseerri/git_code,richardmg/qtcreator,malikcjm/qtcreator,danimo/qt-creator,AltarBeastiful/qt-creator,richardmg/qtcreator,malikcjm/qtcreator,AltarBeastiful/qt-creator,darksylinc/qt-creator,richardmg/qtcreator,AltarBeastiful/qt-creator,omniacreator/qtcreator,duythanhphan/qt-creator,farseerri/git_code,danimo/qt-creator,colede/qtcreator,farseerri/git_code,darksylinc/qt-creator,duythanhphan/qt-creator,danimo/qt-creator