ci: enable x86_64-apple-ios noopt build

Because PGO doesn't work on this target, we need to provide noopt
builds to provide a non-LTO, non-debug build.

Author: indygreg

.github/workflows/apple.yml

@@ -150,8 +150,6 @@ jobs:
             optimizations: 'pgo+lto'
           - triple: 'x86_64-apple-darwin'
             optimizations: 'noopt'
-          - triple: 'x86_64-apple-ios'
-            optimizations: 'noopt'
           - triple: 'x86_64-apple-ios'
             optimizations: 'pgo'
           - triple: 'x86_64-apple-ios'