Remove some hold over in core

Author: Azoy

stdlib/public/core/CMakeLists.txt

@@ -302,7 +302,6 @@ list(APPEND swift_stdlib_compile_flags "-enable-experimental-feature" "Macros")
 list(APPEND swift_stdlib_compile_flags "-enable-experimental-feature" "FreestandingMacros")
 list(APPEND swift_stdlib_compile_flags "-enable-experimental-feature" "Extern")
 list(APPEND swift_stdlib_compile_flags "-enable-experimental-feature" "BitwiseCopyable")
-list(APPEND swift_stdlib_compile_flags "-enable-experimental-feature" "RawLayout")
 
 set(swift_core_incorporate_object_libraries)
 list(APPEND swift_core_incorporate_object_libraries swiftRuntime)

stdlib/public/core/GroupInfo.json

@@ -249,18 +249,5 @@
   ],
   "Result": [
     "Result.swift"
-  ],
-  "Atomics": [
-    "Atomic.swift",
-    "AtomicBool.swift",
-    "AtomicFloats.swift",
-    "AtomicIntegers.swift",
-    "AtomicLazyReference.swift",
-    "AtomicMemoryOrderings.swift",
-    "AtomicOptional.swift",
-    "AtomicPointers.swift",
-    "AtomicStorage.swift",
-    "AtomicValue.swift",
-    "WordPair.swift"
   ]
 }