Remove KDSingleApplication from 3rdparty

3rdparty/README.md

@@ -1,11 +0,0 @@
-3rdparty libraries located in this directory
-============================================
-
-KDSingleApplication
--------------------
-A small library used by Strawberry to prevent it from starting twice per user session.
-If the user tries to start strawberry twice, the main window will maximize instead of starting another instance.
-It is also used to pass command-line options through to the first instance.
-This 3rdparty copy is used only if KDSingleApplication 1.1 or higher is not found on the system.
-
-URL: https://github.com/KDAB/KDSingleApplication/

3rdparty/kdsingleapplication/CMakeLists.txt

@@ -1,11 +0,0 @@
-cmake_minimum_required(VERSION 3.13)
-set(SOURCES KDSingleApplication/src/kdsingleapplication.cpp KDSingleApplication/src/kdsingleapplication_localsocket.cpp)
-set(HEADERS KDSingleApplication/src/kdsingleapplication.h KDSingleApplication/src/kdsingleapplication_localsocket_p.h)
-qt_wrap_cpp(MOC ${HEADERS})
-add_library(kdsingleapplication STATIC ${SOURCES} ${MOC})
-if(NOT MSVC)
-  target_compile_options(kdsingleapplication PRIVATE -Wno-missing-declarations)
-endif()
-target_compile_definitions(kdsingleapplication PRIVATE -DKDSINGLEAPPLICATION_STATIC_BUILD)
-target_include_directories(kdsingleapplication PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
-target_link_libraries(kdsingleapplication PUBLIC Qt${QT_VERSION_MAJOR}::Core Qt${QT_VERSION_MAJOR}::Network)