TreeDelete

TreeDelete[tree,pos] deletes the subtree of tree at the position specified by pos.

TreeDelete[tree,{pos1,pos2,…}] deletes subtrees at several positions.

TreeDelete[pos] represents an operator form of TreeDelete that can be applied to a tree.

Examples

Delete a subtree at position {1}:

t = Tree[a, {Tree[b, {c, d}], Tree[e, {f}]}];
TreeDelete[t, {1}]

Please visit the official Wolfram Language Reference for more details.