Do not install grpc's copy of mozilla's CA bundle

Index: CMakeLists.txt
--- CMakeLists.txt.orig
+++ CMakeLists.txt
@@ -48814,8 +48814,8 @@ install(FILES
   DESTINATION ${gRPC_INSTALL_CMAKEDIR}/modules
 )
 
-install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/etc/roots.pem
-  DESTINATION ${gRPC_INSTALL_SHAREDIR})
+#install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/etc/roots.pem
+  #DESTINATION ${gRPC_INSTALL_SHAREDIR})
 
 # Function to generate pkg-config files.
 function(generate_pkgconfig name description version requires requires_private
