Wolfram Function Repository
Instantuse addon functions for the Wolfram Language
Function Repository Resource:
Delete an element from the value of a symbol and reset the symbol to the result
ResourceFunction["DeleteFrom"][x,n] deletes the element at position n in the value of x, and resets x to the result. If n is negative, the position is counted from the end. 

ResourceFunction["DeleteFrom"][x,{i,j,…}] deletes the part at position {i,j,…} from x. 

ResourceFunction["DeleteFrom"][x,{{i_{1},j_{1},…},{i_{2},j_{2},…}}] deletes parts at several positions. 
Assign x to a list:
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Delete the element at position 3 from the list:
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The value assigned to x has changed:
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Delete at position 2 from the end:
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Delete at positions 1 and 3:
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Delete from a 2D array:
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Delete from an association:
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DeleteFrom works on sparse arrays:
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Deleting the head makes the head be Sequence:
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Deleting at an empty list of positions does not change the value:
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Deleting at position {} deletes the whole expression:
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Wolfram Language 11.3 (March 2018) or above
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