Removed shift from modifier flags as the character returned already includes shift operation

Author: cimarronm

src/_macosx.m

@@ -5491,8 +5491,6 @@ - (const char*)convertKeyEvent:(NSEvent*)event
         [returnkey appendString:@"alt+" ];
     if ([event modifierFlags] & NSCommandKeyMask)
         [returnkey appendString:@"cmd+" ];
-    if ([event modifierFlags] & NSShiftKeyMask)
-        [returnkey appendString:@"shift+" ];
 
     unichar uc = [[event charactersIgnoringModifiers] characterAtIndex:0];
     NSString* specialchar = [specialkeymappings objectForKey:[NSNumber numberWithUnsignedLong:uc]];