Terrell Owens -- DROPPED from IFL's Allen Wranglers

Terrell Owens -- once considered a lock for the NFL Hall of Fame -- has been released from the Allen Wranglers of the Indoor Football League ... and his infamous prima donna ways are to blame.

Team president Tommy Benizio tells TMZ the decision was "performance based" -- but says the final straw was T.O. skipping a recent team visit to a children's hospital in Allen, TX.

This was T.O.'s first season with the Wranglers ... and when he announced the move to the IFL in January it was considered a huge fall from grace for a former NFL superstar.

T.O. put up 10 touchdowns in 8 games for the Wranglers, and had hoped his performance would get him back into the NFL. T.O.'s been trying to impress teams for years ... back in 2010, he flaunted his athleticism for a TMZ camera guy.

By the way, Benizio says T.O.'s also been cut from the Wranglers' ownership group.