reserve PATH_SYM in the same way as NAMES_SYM

mysql-test/main/sp.result

@@ -8802,15 +8802,6 @@ ordinality('1')
 Warnings:
 Note	1585	This function 'ordinality' has the same name as a native function
 DROP FUNCTION ordinality;
-CREATE OR REPLACE FUNCTION path(a VARCHAR(128)) RETURNS int RETURN LENGTH(a)=0;
-Warnings:
-Note	1585	This function 'path' has the same name as a native function
-SELECT path('1');
-path('1')
-0
-Warnings:
-Note	1585	This function 'path' has the same name as a native function
-DROP FUNCTION path;
 CREATE OR REPLACE FUNCTION fast(a VARCHAR(128)) RETURNS int RETURN LENGTH(a)=0;
 Warnings:
 Note	1585	This function 'fast' has the same name as a native function

mysql-test/main/sp.test

@@ -9571,10 +9571,6 @@ CREATE OR REPLACE FUNCTION ordinality(a VARCHAR(128)) RETURNS int RETURN LENGTH(
 SELECT ordinality('1');
 DROP FUNCTION ordinality;
 
-CREATE OR REPLACE FUNCTION path(a VARCHAR(128)) RETURNS int RETURN LENGTH(a)=0;
-SELECT path('1');
-DROP FUNCTION path;
-
 CREATE OR REPLACE FUNCTION fast(a VARCHAR(128)) RETURNS int RETURN LENGTH(a)=0;
 SELECT fast('1');
 DROP FUNCTION fast;

mysql-test/suite/funcs_1/r/storedproc.result

@@ -5102,10 +5102,7 @@ CREATE PROCEDURE sp1()
 path:BEGIN
 SELECT @x;
 END//
-ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'path:BEGIN
-SELECT @x;
-END' at line 2
-DROP PROCEDURE IF EXISTS sp1;
+DROP PROCEDURE sp1;
 CREATE PROCEDURE sp1()
 precision:BEGIN
 SELECT @x;

mysql-test/suite/funcs_1/t/storedproc.test

@@ -4842,16 +4842,13 @@ DROP PROCEDURE IF EXISTS sp1;
 
 delimiter //;
 
---error ER_PARSE_ERROR
 CREATE PROCEDURE sp1()
   path:BEGIN
     SELECT @x;
 END//
 delimiter ;//
 
---disable_warnings
-DROP PROCEDURE IF EXISTS sp1;
---enable_warnings
+DROP PROCEDURE sp1;
 
 delimiter //;
 --error ER_PARSE_ERROR

sql/sql_yacc.yy

@@ -16292,7 +16292,6 @@ ident_cli_func:
         | IDENT_QUOTED
         | keyword_func_sp_var_and_label  { $$= $1; }
         | keyword_func_sp_var_not_label  { $$= $1; }
-        | PATH_SYM                       { $$= $1; }
         ;
 
 TEXT_STRING_sys:
@@ -16455,7 +16454,6 @@ keyword_ident:
 %ifdef ORACLE
         | TYPE_SYM
 %endif
-        | PATH_SYM
         ;
 
 keyword_sysvar_name:
@@ -16472,7 +16470,6 @@ keyword_sysvar_name:
         | EXCEPTION_ORACLE_SYM
         | IGNORED_SYM
         | OFFSET_SYM
-        | PATH_SYM
         ;
 
 keyword_set_usual_case:
@@ -16500,7 +16497,6 @@ non_reserved_keyword_udt:
         | keyword_sysvar_type
         | keyword_sp_var_and_label
         | OFFSET_SYM
-        | PATH_SYM
         ;
 
 /*
@@ -16638,6 +16634,7 @@ keyword_set_special_case:
         | AUTHORIZATION_SYM
         | ROLE_SYM
         | PASSWORD_SYM
+        | PATH_SYM
         ;
 
 keyword_sysvar_type:
@@ -19250,7 +19247,6 @@ keyword_sp_decl:
         | FUNCTION_SYM
         | WINDOW_SYM
         | IGNORED_SYM
-        | PATH_SYM
         ;
 
 opt_truncate_table_storage_clause:
@@ -19726,7 +19722,6 @@ keyword_sp_decl:
         | keyword_verb_clause
         | WINDOW_SYM
         | IGNORED_SYM
-        | PATH_SYM
         ;
 
 opt_truncate_table_storage_clause: