Remove a couple references to deprecated `--mono-no-redirect` flag

Dist/nix_expr_usage_docs.md

@@ -69,7 +69,7 @@ See `packages.nix` for more detail and help with overriding.
 As per the above table:
 ```sh
 nix-build --pure -A emuhawk
-result/bin/emuhawk-* --mono-no-redirect
+result/bin/emuhawk-*
 
 # may need to run this first if the checked-in copy of `Dist/deps.nix` hasn't been updated:
 nix-build --pure -A emuhawk.fetch-deps && ./result

ExternalToolProjects/.run_with_tool.sh

@@ -1,2 +1,2 @@
 #!/bin/sh
-../../output/EmuHawkMono.sh --mono-no-redirect --open-ext-tool-dll=$(printf *.csproj | head -c-7) "$@"
+../../output/EmuHawkMono.sh --open-ext-tool-dll=$(printf *.csproj | head -c-7) "$@"