Regex Regular Expression To Remove Lines Which Start With Certain Text?

Mar 24, 2012

I know it may be quite easily for you. i have a text which contains 40 lines, I want to remove lines which starts with a constant text. check below data.

When I used (?mn)[+CMGL:].*($) it removes the whole text , when I use (?mn)[+CMGL:].*(
) , it only leaves the first line.
+CMGL: 0,1,,159
07910201956905F0440B910201532762F20008709021225282808
+CMGL: 1,1,,159

[Code]...

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