Remove ES_NEXT macro (#4915)

- remove all '#JERRY_ESNEXT' macro
- remove 5.1 build profile, update test runner accordingly (Note: all builtins are turn on by default)
- move tests from tests/jerry/esnext into tests/jerry, concatenate files with same names
- add skiplist to some snapshot tests that were supported only in 5.1
- fix doxygen issues that were hidden before (bc. of es.next macro)

Co-authored-by: Martin Negyokru negyokru@inf.u-szeged.hu
JerryScript-DCO-1.0-Signed-off-by: Adam Szilagyi aszilagy@inf.u-szeged.hu

jerry-core/ecma/operations/ecma-eval.c

@@ -81,9 +81,7 @@ ecma_op_eval_chars_buffer (void *source_p, /**< source code */
 
   parse_opts |= ECMA_PARSE_EVAL;
 
-#if JERRY_ESNEXT
   ECMA_CLEAR_LOCAL_PARSE_OPTS ();
-#endif /* JERRY_ESNEXT */
 
   ecma_compiled_code_t *bytecode_p = parser_parse_script (source_p, parse_opts, NULL);
 
@@ -93,12 +91,6 @@ ecma_op_eval_chars_buffer (void *source_p, /**< source code */
   }
 
   return vm_run_eval (bytecode_p, parse_opts);
-#else /* !JERRY_PARSER */
-  JERRY_UNUSED (code_p);
-  JERRY_UNUSED (code_buffer_size);
-  JERRY_UNUSED (parse_opts);
-
-  return ecma_raise_syntax_error (ECMA_ERR_PARSER_NOT_SUPPORTED);
 #endif /* JERRY_PARSER */
 } /* ecma_op_eval_chars_buffer */