Revert "Add Thenable curtailment to agenda (#2039)"

This reverts commit e15a8fe.

Author: jessealama

2026/03.md

@@ -116,7 +116,6 @@ When applicable, use these emoji as a prefix to the agenda item topic.
     | 3 | 15m | [import defer](https://github.com/tc39/proposal-defer-import-eval/) interaction with [tc39/ecma262#3715](https://github.com/tc39/ecma262/pull/3715), and normative PR *Shield dynamic import defer against Promise.prototype monkey patch* ([PR](https://github.com/tc39/proposal-defer-import-eval/pull/77)) | Nicolò Ribaudo |
     | 3 | 90m | [Temporal](https://github.com/tc39/proposal-temporal) for Stage 4 (materials TBA) | Philip Chimento |
     | 2 |  5m | Withdraw [Dynamic Import Host Adjustment](https://github.com/tc39/proposal-dynamic-import-host-adjustment) | Steve Hicks |
-    | 1 | 60m | [Thenable Curtailment](https://github.com/tc39/proposal-thenable-curtailment) for Stage 2 (Slides TBD) | Matthew Gaudet | 
     | 1 | 30m | [TypedArray concat](https://github.com/tc39/proposal-typedarray-concat) for Stage 2 (slides TBD) | James M Snell |
     | 1 | 30m | [TypedArray find within](https://github.com/tc39/proposal-typedarray-findwithin) for Stage 2 (slides TBD) | James M Snell |
     | 0 | 30m | [Iterator Includes](https://github.com/michaelficarra/proposal-iterator-includes) for Stage 1, 2, or 2.7 ([slides](https://docs.google.com/presentation/d/1a-1RQayP-tcJd2VAhFGoiL_dRT8gD8_qrp__qSgC1A4)) | Michael Ficarra |