Deleting Zero Rows - Matlab Noob

I have a matrix A where the first column consists of unique positive whole numbers and zeros. I want to delete the rows where the values are zero.

A = csvread('Truss Data.csv',1,0);  

B = sortrows(A(:,1:7)); %I'm sorting them to make sure they are sequential%

A =
1  0  0  0  0  1  1  1  29000  10  1  2
2  30  0  0  -120  0  0  2  29000  10  2  3
3  60  0  0  0  0  0  3  29000  10  3  4
4  90  0  0  0  0  1  4  29000  10  1  5
5  30  40  90  0  0  0  5  29000  10  2  5
6  60  40  0  0  0  0  6  29000  10  3  5
0  0  0  0  0  0  0  7  29000  10  3  6
0  0  0  0  0  0  0  8  29000  10  4  6
0  0  0  0  0  0  0  9  29000  10  5  6

B =
0  0  0  0  0  0  0
0  0  0  0  0  0  0
0  0  0  0  0  0  0
1  0  0  0  0  1  1
2  30  0  0  -120  0  0
3  60  0  0  0  0  0
4  90  0  0  0  0  1
5  30  40  90  0  0  0
6  60  40  0  0  0  0

How do I remove the rows in B where the first column of B has zeros? I want:

B =
1  0  0  0  0  1  1
2  30  0  0  -120  0  0
3  60  0  0  0  0  0
4  90  0  0  0  0  1
5  30  40  90  0  0  0
6  60  40  0  0  0  0

[Mark]

*Note - the above matrix A doesn't show correctly on this webpage. There were too many columns to fit.

Answer 1

[Cedric]

 B(B(:,1)==0,:) = [] ;

[Dattaprasad Sh]

works well. thank you!!