The Mexican unit of Swiss cement company Holcim Ltd said Thursday it has delisted its shares from the local stock market.  The shares of Holcim Apasco have traded occasionally since the European parent bought out the unit earlier this year for about $750m  In a filing with the Mexican stock market, Holcim Apasco said only 0.1% of outstanding shares remain in hands of minority holders who can still sell them for the same offer price of $10.20 a share.  Holcim Apasco is Mexico’s second-largest cement company, behind Cemex.