Found:

Deletion

SYNTAX: erasing (at least) the phonological features of an element in a representation. In early versions of generative grammar, deletion was constrained by the principle of recoverability of deletion. In current work, recoverability is partly captured by the ECP. Deletion counts as a possible instantiation of affect alpha. EXAMPLE: complementizer deletion (I know [that] he comes) may be an instance of deletion subject to the ECP.

LIT.	Riemsdijk, H. van and E. Williams (1986)