rust: remove --enable-debuginfo

Without this we cannot set 'eliminate-frame-pointer' in our target spec.

Signed-off-by: Doug Goldstein <cardoe@cardoe.com>

recipes-devtools/rust/rust.inc

@@ -409,7 +409,6 @@ do_configure () {
         "--disable-docs"                    \
         "--disable-manage-submodules"       \
         "--disable-debug"                   \
-        "--enable-debuginfo"                \
         "--enable-optimize"                 \
         "--enable-optimize-cxx"             \
         "--disable-llvm-version-check"      \