clang-tidy: Disable misc-use-anonymous-namespace check

The benefit of this check is questionable, so it has been disabled.
See: https://clang.llvm.org/extra/clang-tidy/checks/misc/use-anonymous-namespace.html

Author: hebasto

.clang-tidy

@@ -11,6 +11,7 @@ misc-*,
 -misc-no-recursion,
 -misc-unconventional-assign-operator,
 -misc-unused-parameters,
+-misc-use-anonymous-namespace,
 modernize-*,
 -modernize-avoid-c-arrays,
 -modernize-concat-nested-namespaces,