Droping a row from a matrix

Question

I want to drop a row from a matrix but the output seems to be:

MatrixForm[]

My code:

A = ( {{1, 1, 0, 0, 0, 800},
{0, 1, -1, 1, 0, 300},
{0, 0, 0, 1, 1, 500},
{1, 0, 0, 0, 1, 600}} );
P = MatrixForm[UpperTriangularize[First[LUDecomposition[A]]]];
Q = Map[Round[#, 0.01] &, P]
Q1 = Drop[Q, 1, None]

I am working with a bigger data but to pinpoint my error I used a simple matrix and found I have an issue with using the Drop command. I have tried Q1 = Drop[Q, {1, 2, 1}, {1, 2, 1}] and other functions like Delete and Part with no success.