remove dead code

sql/sql_lex.cc

@@ -698,7 +698,6 @@ void LEX::start(THD *thd_arg)
   describe= 0;
   analyze_stmt= 0;
   explain_json= false;
-  subqueries= FALSE;
   context_analysis_only= 0;
   derived_tables= 0;
   safe_to_cache_query= 1;

sql/sql_lex.h

@@ -3034,7 +3034,7 @@ struct LEX: public Query_tables_list
 
   enum enum_yes_no_unknown tx_chain, tx_release;
   bool safe_to_cache_query;
-  bool subqueries, ignore;
+  bool ignore;
   st_parsing_options parsing_options;
   Alter_info alter_info;
   /*
@@ -3053,7 +3053,6 @@ struct LEX: public Query_tables_list
   sp_name *spname;
   bool sp_lex_in_use;   // Keep track on lex usage in SPs for error handling
   bool all_privileges;
-  bool proxy_priv;
 
   sp_pcontext *spcont;
 
@@ -4140,18 +4139,6 @@ class Yacc_state
   */
 };
 
-/**
-  Input parameters to the parser.
-*/
-struct Parser_input
-{
-  bool m_compute_digest;
-
-  Parser_input()
-    : m_compute_digest(false)
-  {}
-};
-
 /**
   Internal state of the parser.
   The complete state consist of:
@@ -4179,7 +4166,6 @@ class Parser_state
   ~Parser_state()
   {}
 
-  Parser_input m_input;
   Lex_input_stream m_lip;
   Yacc_state m_yacc;
 

sql/sql_parse.cc

@@ -7733,7 +7733,6 @@ mysql_new_select(LEX *lex, bool move_down, SELECT_LEX *select_lex)
   if (move_down)
   {
     SELECT_LEX_UNIT *unit;
-    lex->subqueries= TRUE;
     /* first select_lex of subselect or derived table */
     if (!(unit= new (thd->mem_root) SELECT_LEX_UNIT()))
       DBUG_RETURN(1);
@@ -10079,8 +10078,7 @@ bool parse_sql(THD *thd, Parser_state *parser_state,
     /* Start Digest */
     parser_state->m_digest_psi= MYSQL_DIGEST_START(thd->m_statement_psi);
 
-    if (parser_state->m_input.m_compute_digest ||
-       (parser_state->m_digest_psi != NULL))
+    if (parser_state->m_digest_psi != NULL)
     {
       /*
         If either:

sql/sql_view.cc

@@ -1712,7 +1712,6 @@ bool mysql_make_view(THD *thd, TABLE_SHARE *share, TABLE_LIST *table,
     view_select->linkage= DERIVED_TABLE_TYPE;
     table->updatable= 0;
     table->effective_with_check= VIEW_CHECK_NONE;
-    old_lex->subqueries= TRUE;
 
     table->derived= &lex->unit;
   }