Remove character pointer typedefs (#2492)

The `[jerry|ecma]_char_ptr_t` types are some old legacy that are
used quite inconsistently. Their `[jerry|ecma]_char_t *` variants
are used a lot more often, so it's better to stick to one form
throughout the code base.

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

jerry-core/lit/lit-char-helpers.c

@@ -414,7 +414,7 @@ lit_char_get_utf8_length (ecma_char_t chr) /**< EcmaScript character */
 bool
 lit_read_code_unit_from_hex (const lit_utf8_byte_t *buf_p, /**< buffer with characters */
                              lit_utf8_size_t number_of_characters, /**< number of characters to be read */
-                             ecma_char_ptr_t out_code_unit_p) /**< [out] decoded result */
+                             ecma_char_t *out_code_unit_p) /**< [out] decoded result */
 {
   ecma_char_t code_unit = LIT_CHAR_NULL;