Texas never had a ton of cloverleafs or loop ramps. In 1991 when TxDot was created a directive was given out to remove cloverleafs and loop ramps, and to not build them in the future. I am not sure if this is codified anywhere, it's just sort of general knowledge. I've asked them before for some policy document or what have you, but their Public Information Office is generally worthless (sorry).
Anyway, here is a partial list of cloverleafs or partial cloverleafs in Texas that are going away or already are gone:
US 75 at IH 635, Dallas -loop ramps removed for stack
US 75 at Loop 12, Dallas - Loop Ramps removed
SH 183/SH114 at Loop 12, Irving - u/c to change in the stack
IH 410 at San Pedro, San Antonio - changed to diamond
IH 10 at Loop 1604 W, San Antonio - cloverleaf going away for stack (slowly)
IH 10 at IH 410, San Antonio - cloverleaf going away for stack
IH 410 at US 90, San Antonio - cloverleaf going away for stack
IH 37 at Loop 13, San Antonio - u/c to change into diamond
IH 35 at 51st St, Austin - Loop Ramp removed
IH 35 at SH 6, Waco - u/c into stack interchange
IH 30 at SH 34, Greenville - cloverleaf going away
IH 45All of the loop ramps between Houston and Galveston - going away or already gone
IH 30 at US 71, Texarkana - cloverleaf going away
US 59 at Loop 287, Lufkin - loop ramp going away
IH 10 at Loop 375, El Paso - cloverleaf going away