.gitmodules: remove unused empty file
.gitmodules: remove unused empty file

It seems that .gitmodules, added with commit cab524afb243 ("envoy: Envoy
integration.") to the root of the repository, is in fact not necessary
and not in use in the project. Let's remove it.

Fixes: cab524afb243 ("envoy: Envoy integration.")
Signed-off-by: Quentin Monnet <d6b8e48afb2534b213e391cab43016505747a234@isovalent.com>

michi-covalent/cilium,michi-covalent/cilium,michi-covalent/cilium,cilium/cilium,cilium/cilium,cilium/cilium,cilium/cilium,cilium/cilium,michi-covalent/cilium,michi-covalent/cilium