treewide: remove file-wide `with rustPlatform;`s

pkgs/applications/networking/cluster/click/default.nix

···
 { darwin, fetchFromGitHub, rustPlatform, lib, stdenv }:
 
-with rustPlatform;
-
-buildRustPackage rec {
+rustPlatform.buildRustPackage rec {
   pname = "click";
   version = "0.4.2";
 

pkgs/applications/networking/dyndns/cfdyndns/default.nix

···
 { lib, fetchFromGitHub, rustPlatform, pkg-config, openssl }:
 
-with rustPlatform;
-
-buildRustPackage rec {
+rustPlatform.buildRustPackage rec {
   pname = "cfdyndns";
   version = "0.0.3";
   src = fetchFromGitHub {

pkgs/development/misc/loc/default.nix

···
 { lib, fetchFromGitHub, rustPlatform }:
 
-with rustPlatform;
-
-buildRustPackage rec {
+rustPlatform.buildRustPackage rec {
   version = "0.4.1";
   pname = "loc";
 

pkgs/development/tools/chit/default.nix

···
 , darwin
 }:
 
-with rustPlatform;
-
-buildRustPackage rec {
+rustPlatform.buildRustPackage rec {
   pname = "chit";
   version = "0.1.15";
 

pkgs/development/tools/clog-cli/default.nix

···
 { fetchFromGitHub, rustPlatform, lib }:
 
-with rustPlatform;
-
-buildRustPackage rec {
+rustPlatform.buildRustPackage rec {
   pname = "clog-cli";
   version = "0.9.3";
 

pkgs/development/tools/pax-rs/default.nix

···
 { lib, fetchFromGitHub, fetchurl, rustPlatform, runCommand } :
-with rustPlatform;
 
-buildRustPackage rec {
+rustPlatform.buildRustPackage rec {
   pname = "pax-rs";
   version = "0.4.0";
 

pkgs/servers/tarssh/default.nix

···
 { fetchFromGitHub, rustPlatform, lib }:
 
-with rustPlatform;
-
-buildRustPackage rec {
+rustPlatform.buildRustPackage rec {
   pname = "tarssh";
   version = "0.7.0";
 

pkgs/tools/misc/ffsend/default.nix

···
 
 assert (x11Support && usesX11) -> xclip != null || xsel != null;
 
-with rustPlatform;
-
-buildRustPackage rec {
+rustPlatform.buildRustPackage rec {
   pname = "ffsend";
   version = "0.2.76";
 

pkgs/tools/security/ripasso/cursive.nix

···
 , installShellFiles
 }:
 
-with rustPlatform;
-buildRustPackage rec {
+rustPlatform.buildRustPackage rec {
   version = "0.6.4";
   pname = "ripasso-cursive";