Revisit unused global functions in jerry-core (#2450)

There are some leftover global functions in the code that are not
referenced at all anymore. These functions are removed by this
patch.

There are also some global functions that are only used in their
own modules. These functions are made static by this patch.

JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu

jerry-core/ecma/base/ecma-alloc.c

@@ -184,35 +184,6 @@ ecma_dealloc_string_buffer (ecma_string_t *string_p, /**< string with data */
   jmem_heap_free_block (string_p, size);
 } /* ecma_dealloc_string_buffer */
 
-/**
- * Allocate memory for getter-setter pointer pair
- *
- * @return pointer to allocated memory
- */
-inline ecma_getter_setter_pointers_t * JERRY_ATTR_ALWAYS_INLINE
-ecma_alloc_getter_setter_pointers (void)
-{
-#ifdef JMEM_STATS
-  jmem_stats_allocate_property_bytes (sizeof (ecma_property_pair_t));
-#endif /* JMEM_STATS */
-
-  return (ecma_getter_setter_pointers_t *) jmem_pools_alloc (sizeof (ecma_getter_setter_pointers_t));
-} /* ecma_alloc_getter_setter_pointers */
-
-/**
- * Dealloc memory from getter-setter pointer pair
- */
-inline void JERRY_ATTR_ALWAYS_INLINE
-ecma_dealloc_getter_setter_pointers (ecma_getter_setter_pointers_t *getter_setter_pointers_p) /**< pointer pair
-                                                                                                * to be freed */
-{
-#ifdef JMEM_STATS
-  jmem_stats_free_property_bytes (sizeof (ecma_property_pair_t));
-#endif /* JMEM_STATS */
-
-  jmem_pools_free (getter_setter_pointers_p, sizeof (ecma_getter_setter_pointers_t));
-} /* ecma_dealloc_getter_setter_pointers */
-
 /**
  * Allocate memory for ecma-property pair
  *