Revert "Disable IOS"

This reverts commit 9b5d6ca.

Author: tstellar

.github/workflows/release-binaries.yml

@@ -135,7 +135,7 @@ jobs:
         # add extra CMake args to disable them.
         # See https://github.com/llvm/llvm-project/issues/99767
         if [ "$RUNNER_OS" = "macOS" ]; then
-          target_cmake_flags="$target_cmake_flags -DCOMPILER_RT_ENABLE_IOS=OFF -DBOOTSTRAP_COMPILER_RT_ENABLE_IOS=OFF -DBOOTSTRAP_BOOTSTRAP_COMPILER_RT_ENABLE_IOS=OFF"
+          target_cmake_flags="$target_cmake_flags -DBOOTSTRAP_BOOTSTRAP_COMPILER_RT_ENABLE_IOS=OFF"
           if [ "$RUNNER_ARCH" = "ARM64" ]; then
             arches=arm64
           else