don't build browserhost for clr.runtime subset

Author: pavelsavara

src/coreclr/CMakeLists.txt

@@ -72,9 +72,8 @@ else()
       # WASM-TODO set GEN_PINVOKE to 1 once we generate them. static entrypoint.c prevents C linker from trimming, when IL trimming trims PInvokes
       set(GEN_PINVOKE 0)
       # WASM-TODO should we start using System.Native.Browser and System.Runtime.InteropServices.JavaScript.Native also for Mono ?
-      set(BUILD_LIBS_NATIVE_BROWSER 1)
-      add_subdirectory(${CLR_SRC_NATIVE_DIR}/corehost browserhost)
-      add_dependencies(runtime browserhost)
+      add_dependencies(runtime System.Native.Browser-Static)
+      add_dependencies(runtime System.Runtime.InteropServices.JavaScript.Native-Static)
     endif()
 endif()