Avoid duplicate *chrom* copies which we do via @sample

Index: src/app/CMakeLists.txt
--- src/app/CMakeLists.txt.orig
+++ src/app/CMakeLists.txt
@@ -161,14 +161,8 @@ else()
     endif()
     install(FILES ${CMAKE_CURRENT_BINARY_DIR}/eu.webeid.json
         DESTINATION ${CMAKE_INSTALL_DATADIR}/web-eid)
-    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/eu.webeid.json
-        DESTINATION ${CMAKE_INSTALL_SYSCONFDIR}/chromium/native-messaging-hosts)
-    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/eu.webeid.json
-        DESTINATION ${CMAKE_INSTALL_SYSCONFDIR}/opt/chrome/native-messaging-hosts)
     install(FILES ${CMAKE_SOURCE_DIR}/install/ncibgoaomkmdpilpocfeponihegamlic.json
         DESTINATION ${CMAKE_INSTALL_DATADIR}/google-chrome/extensions)
-    install(FILES ${CMAKE_SOURCE_DIR}/install/ncibgoaomkmdpilpocfeponihegamlic.json
-        DESTINATION ${CMAKE_INSTALL_DATADIR}/chromium/extensions)
     install(FILES ${CMAKE_SOURCE_DIR}/install/web-eid.desktop
         DESTINATION ${CMAKE_INSTALL_DATADIR}/applications)
     if (BUNDLE_XPI)
