Backed out "fix for PR 7575". It was bogus.

usr.bin/lex/lex.1

@@ -3196,7 +3196,7 @@ When using this option, flex defaults to generating the scanner to the file
 instead of
 .B lex.yy.c.
 The generated scanner includes the header file
-.I g++/FlexLexer.h,
+.I FlexLexer.h,
 which defines the interface to two C++ classes.
 .PP
 The first class,

usr.bin/lex/main.c

@@ -1006,7 +1006,7 @@ _( "Variable trailing context rules entail a large performance penalty\n" ) );
 
 	if ( C_plus_plus )
 		{
-		outn( "\n#include <g++/FlexLexer.h>" );
+		outn( "\n#include <FlexLexer.h>" );
 
 		if ( yyclass )
 			{