Remove YY_NO defines that cause warnings.

libs/wpp/ppl.l

@@ -172,8 +172,6 @@ ul	[uUlL]|[uUlL][lL]|[lL][uU]|[lL][lL][uU]|[uU][lL][lL]|[lL][uU][lL]
 #error Must use flex version 2.5.1 or higher (yy_scan_* routines are required).
 #endif
 
-#define YY_USE_PROTOS
-#define YY_NO_UNPUT
 #define YY_READ_BUF_SIZE	65536		/* So we read most of a file at once */
 
 #define yy_current_state()	YY_START

programs/winedbg/debug.l

@@ -70,8 +70,6 @@ static size_t last_line_idx = 0;
 	if ((result = read_input("Wine-dbg>", buf, max_size)) < 0) \
 	    YY_FATAL_ERROR("read_input in flex scanner failed");
 
-#define YY_NO_UNPUT
-
 static int syntax_error;
 %}
 

programs/winhelp/macro.lex.l

@@ -39,7 +39,6 @@ struct lexret  yylval;
 #define YY_INPUT(buf,result,max_size)\
   if ((result = *macroptr ? 1 : 0)) buf[0] = *macroptr++;
 
-#define YY_NO_UNPUT
 %}
 %%
 

tools/widl/parser.l

@@ -53,10 +53,6 @@ uuid	{hexd}{8}-{hexd}{4}-{hexd}{4}-{hexd}{4}-{hexd}{12}
 
 #include "parser.tab.h"
 
-#define YY_USE_PROTOS
-#define YY_NO_UNPUT
-#define YY_NO_TOP_STATE
-
 extern char *temp_name;
 
 static void addcchar(char c);

tools/wrc/parser.l

@@ -112,10 +112,6 @@ cident	[a-zA-Z_][0-9a-zA-Z_]*
 
 #include "parser.tab.h"
 
-#define YY_USE_PROTOS
-#define YY_NO_UNPUT
-#define YY_NO_TOP_STATE
-
 /* Always update the current character position within a line */
 #define YY_USER_ACTION	char_number+=yyleng; wanted_id = want_id; want_id = 0;