Remove unnecessary download-ci-llvm from setup_rust_fork.sh

Author: bjorn3

scripts/setup_rust_fork.sh

@@ -25,9 +25,6 @@ git -c user.name=Dummy -c [email protected] -c commit.gpgSign=false \
 cat > config.toml <<EOF
 change-id = 999999
 
-[llvm]
-download-ci-llvm = true
-
 [build]
 rustc = "$(pwd)/../dist/bin/rustc-clif"
 cargo = "$(rustup which cargo)"
@@ -44,28 +41,6 @@ verbose-tests = false
 # compiler.
 llvm-tools = false
 std-features = ["panic-unwind"]
-
-EOF
-
-cat <<EOF | git apply -
-diff --git a/src/bootstrap/src/core/config/config.rs b/src/bootstrap/src/core/config/config.rs
-index cf4ef4ee310..fe78560fcaf 100644
---- a/src/bootstrap/src/core/config/config.rs
-+++ b/src/bootstrap/src/core/config/config.rs
-@@ -3138,13 +3138,6 @@ fn parse_download_ci_llvm(
-                     );
-                 }
-
--                if b && self.is_running_on_ci {
--                    // On CI, we must always rebuild LLVM if there were any modifications to it
--                    panic!(
--                        "\`llvm.download-ci-llvm\` cannot be set to \`true\` on CI. Use \`if-unchanged\` instead."
--                    );
--                }
--
-                 // If download-ci-llvm=true we also want to check that CI llvm is available
-                 b && llvm::is_ci_llvm_available_for_target(self, asserts)
-             }
 EOF
 
 popd