cmake: lld: Remove duplicate -fuse-ld=lld

-fuse-ld=lld is currently specified twice through the baremetal property
(in cmake/linker/lld/linker_flags.cmake) and TOOLCHAIN_LD_FLAGS (in
cmake/linker/lld/target.cmake). This doesn't really harm anything as
it isn't duplicated on the link line (and specifying it multiple times
wouldn't hurt even if it was), but it also doesn't really help anything.

-fuse-ld isn't baremetal-specific and setting it via TOOLCHAIN_LD_FLAGS
will cover this case anyway, so remove this duplicate.

Signed-off-by: Jonathon Penix <jpenix@quicinc.com>

cmake/linker/lld/linker_flags.cmake

@@ -11,11 +11,6 @@ if(NOT CONFIG_NATIVE_LIBRARY AND NOT CONFIG_EXTERNAL_MODULE_LIBCPP)
   set_property(TARGET linker PROPERTY cpp_base ${LINKERFLAGPREFIX},-z,norelro)
 endif()
 
-# Force LLVM to use built-in lld linker
-if(NOT CONFIG_LLVM_USE_LD)
-  check_set_linker_property(TARGET linker APPEND PROPERTY baremetal -fuse-ld=lld)
-endif()
-
 set_property(TARGET linker PROPERTY no_position_independent "${LINKERFLAGPREFIX},--no-pie")
 
 set_property(TARGET linker PROPERTY lto_arguments)