remove some superflouous const attributes

p99/p99_constraint.h

@@ -286,7 +286,6 @@ void p99_report_handler(const char * restrict p00_msg,
   p00_constraint_report(p00_err, 0, 0, p00_msg);
 }
 
-P99_CONST_FUNCTION
 p99_inline
 void p99_ignore_handler(const char * restrict p00_msg,
                         void * restrict p00_ptr,
@@ -367,7 +366,6 @@ void p99_constraint_handler(const char * restrict p00_msg,
 # ifndef __STDC_LIB_EXT1__
 
 P99_WEAK(ignore_handler_s)
-P99_CONST_FUNCTION
 void ignore_handler_s(const char * restrict p00_msg,
                       void * restrict p00_ptr,
                       errno_t p00_err) {

p99/p99_threads.h

@@ -332,7 +332,6 @@ p99_inline thrd_t* thrd_t_init(thrd_t *p00_id) {
   return p00_id;
 }
 
-P99_CONST_FUNCTION
 p99_inline void thrd_t_destroy(thrd_t *p00_id) {
   /* special care for bogus warning given by icc */
   (void)p00_id;

p99/p99_type.h

@@ -138,7 +138,6 @@ p99_inline T* P99_PASTE2(T, _init)(T *p00_id) {                    \
   return p00_id;                                                   \
 }                                                                  \
 /*! @brief destroy the object that @a p00_id points to. */         \
-P99_CONST_FUNCTION                                                 \
 p99_inline void P99_PASTE2(T, _destroy)(T*  p00_id) {              \
   /* empty */                                                      \
   (void)p00_id;                                                    \