[LyX/master] Remove another unnecessary assignment

[Stephan Witt]

commit 3ee1bcad041f29256df7132292de2592e8fc7ab6
Author: Stephan Witt <switt at lyx.org>
Date:   Wed Feb 12 12:28:18 2020 +0100

    Remove another unnecessary assignment
---
 src/mathed/MathParser.cpp |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/src/mathed/MathParser.cpp b/src/mathed/MathParser.cpp
index d95d1d2..00f7e99 100644
--- a/src/mathed/MathParser.cpp
+++ b/src/mathed/MathParser.cpp
@@ -2134,7 +2134,6 @@ bool Parser::parse1(InsetMathGrid & grid, unsigned flags,
 
 
 		if (flags & FLAG_LEAVE) {
-			flags &= ~FLAG_LEAVE;
 			break;
 		}
 	}