[6.1][cxx-interop] Remove escapability interop annotations

lib/ClangImporter/SwiftBridging/swift/bridging

@@ -39,12 +39,6 @@
 
 #define _CXX_INTEROP_STRINGIFY(_x) #_x
 
-#define _CXX_INTEROP_CONCAT_(a,b,c,d,e,f,g,i,j,k,l,m,n,o,p,...)         \
-  #a "," #b "," #c "," #d "," #e "," #f "," #g "," #i "," #j "," #k "," \
-  #l "," #m "," #n "," #o "," #p
-#define _CXX_INTEROP_CONCAT(...) \
-  _CXX_INTEROP_CONCAT_(__VA_ARGS__,,,,,,,,,,,,,,,,,)
-
 /// Specifies that a C++ `class` or `struct` is reference-counted using
 /// the given `retain` and `release` functions. This annotation lets Swift import
 /// such a type as reference counted type in Swift, taking advantage of Swift's
@@ -165,24 +159,6 @@
 #define SWIFT_NONCOPYABLE \
   __attribute__((swift_attr("~Copyable")))
 
-/// Specifies that a specific c++ type such class or struct should be imported
-/// as a non-escapable Swift value type when the non-escapable language feature
-/// is enabled.
-#define SWIFT_NONESCAPABLE \
-  __attribute__((swift_attr("~Escapable")))
-
-/// Specifies that a specific c++ type such class or struct should be imported
-/// as a escapable Swift value. While this matches the default behavior,
-/// in safe mode interop mode it ensures that the type is not marked as
-/// unsafe.
-#define SWIFT_ESCAPABLE \
-  __attribute__((swift_attr("Escapable")))
-
-/// Specifies that a C++ `class` or `struct` should be imported as a escapable
-/// Swift value if all of the specified template arguments are escapable.
-#define SWIFT_ESCAPABLE_IF(...) \
-  __attribute__((swift_attr("escapable_if:" _CXX_INTEROP_CONCAT(__VA_ARGS__))))
-
 /// Specifies that the return value is passed as owned for C++ functions and
 /// methods returning types annotated as `SWIFT_SHARED_REFERENCE`
 #define SWIFT_RETURNS_RETAINED __attribute__((swift_attr("returns_retained")))
@@ -205,9 +181,6 @@
 #define SWIFT_MUTATING 
 #define SWIFT_UNCHECKED_SENDABLE
 #define SWIFT_NONCOPYABLE
-#define SWIFT_NONESCAPABLE
-#define SWIFT_ESCAPABLE
-#define SWIFT_ESCAPABLE_IF(...)
 #define SWIFT_RETURNS_RETAINED
 #define SWIFT_RETURNS_UNRETAINED