Removed unused QueryWord::m_level

Query.cpp

@@ -310,8 +310,6 @@ bool Query::set2 ( const char *query        ,
 	for ( int32_t i = 0 ; i < m_numWords ; i++ ) {
 		// get the ith word
 		QueryWord *qw = &m_qwords[i];
-		// skip if not on first level
-		if ( qw->m_level != 0 ) continue;
 		// stop at first OR on this level
 		if ( qw->m_opcode == opcode_t::OP_OR ) break;
 		// skip all punct

Query.h

@@ -195,9 +195,6 @@ class QueryWord {
 	// . if we're a phrase term, signs distribute across quotes
 	char        m_wordSign;
 	char        m_phraseSign;
-	// the parenthetical level of this word in the boolean expression.
-	// level 0 is the first level.
-	char        m_level;
 	// is this word a query stop word?
 	bool        m_isQueryStopWord ; 
 	// is it a plain stop word?