nl_tokens: Remove the given property name style declaration that the position is front of the current given style declaration .
pl_tokens: function removeUnUseDecl ( decl , toRemovePropName ) { let nodes = decl . parent . nodes ; let currIdx = nodes . indexOf ( decl ) ; for ( let i = currIdx - 1 ; i >= 0 ; i -- ) { let item = nodes [ i ] ; if ( item . type === 'decl' && item . prop === toRemovePropName ) { <mask> . remove ( ) ; } } }