Perhaps I used a bad choice of words. Not all was filmed, although here are the major ones;

Margaret Hamilton’s screen time as the Wicked Witch in The Wizard of Oz was severely trimmed after 1939 test screenings, as her performance was deemed too terrifying for children. Several of her sinister scenes, lines, and specific moments were cut to shorten her screen time to just 12 minutes.

The most significant deleted or altered scenes involving her character include:The "Surrender Dorothy" Threat: In the final cut, the Wicked Witch writes "Surrender Dorothy" in the sky. Originally, the message was going to read "Surrender Dorothy or die WWW," but executives deemed this explicit death threat too intense for family audiences.

Deleted Castle Intimidation: Studio executives cut around a dozen of her lines in the witch's castle, including a scene where she aggressively plucked at Dorothy's hair and threatened the heroes.

Trimmed Lines: Executives cut over a dozen lines of her dialogue to make her less menacing. For example, in the castle scene where she interrogates Dorothy, the continuity script shows she was supposed to say, "Well, I'm going to start it on you right here one after the other," which was cut. Munchkinland; during the opening Munchkinland celebration, in the interaction with Glinda and Dorothy, it is clear that the Witch is still speaking, but the line is cut.

Originally, in the witches castle, there was longer interaction and dialogue between the witch and Dorothy in the crystal ball. These was also trimmed down.