cmake: removed targets, still show up in kit selector, and Projects->Run->Run configuration

Hi,

consider the following CMakeLists.txt with 6 targets:

cmake_minimum_required(VERSION 3.5)
project(go1 LANGUAGES CXX)
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

add_executable(go1 main.cpp)
add_executable(go2 main.cpp)
add_executable(go3 main.cpp)
add_executable(go4 main.cpp)
add_executable(go5 main.cpp)
add_executable(go6 main.cpp)

I can see the 6 targets (go1 to go6)  nicely in 3 places:

a) Project sidebar (each target has a small hammer icon)

b) Kit selector: showing: Kit | Build | Run       (under Run)

c) Projects->Run->Run configuration

Now go ahead and delete 3 targets, by changing the CMakeLists.txt to the following:

cmake_minimum_required(VERSION 3.5)
project(go1 LANGUAGES CXX)
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

add_executable(go1 main.cpp)
add_executable(go2 main.cpp)
add_executable(go3 main.cpp)

Targets go4, go5 and go6 no longer exist, and are properly removed from

a) Project sidebar.

But the targets are not properly removed from

b) Kit selector: showing: Kit | Build | Run       (under Run)

c) Projects->Run->Run configuration