replace clang attribute analyzer_noreturn by proper __noreturn__

analyzer_noreturn is only a static analyzer hint, but does not even protect from false
-Wsometimes-uninitialized warnings, with Parrot_ex_throw_from_c*().

__noreturn__ also produces better code.

include/parrot/compiler.h

@@ -38,11 +38,7 @@
 #  ifdef _MSC_VER
 #    define __attribute__noreturn__         __declspec(noreturn)
 #  else
-#    ifdef __clang__
-#      define __attribute__noreturn__         __attribute__((analyzer_noreturn))
-#    else
-#      define __attribute__noreturn__         __attribute__((__noreturn__))
-#    endif
+#    define __attribute__noreturn__         __attribute__((__noreturn__))
 #  endif
 #endif
 #ifdef HASATTRIBUTE_PURE