regex - Use grep to match and erase a pattern in a large chunck of text

Question

I have a very large text file which contains data similar to the following:

     but/CC as/IN 1/Z church/NP historian/NN/Fc 
     as/IN 1/Z "/Fe rupture/NN and/CC new/JJ beginning/NN century/NN ./Fp
    ======>match found: ##[a-z]+/NN##
    ======>match found: be/V[A-Z]+(s[.]{0,10})?##
    ======>match found: ##sof/IN

I would like to use the (linux) terminal command grep to match and erase all the lines that start with:

======>match found:

and end with a newline character.

Thus, according to the previous example, I'd like to run grep and obtain the following output

but/CC as/IN 1/Z church/NP historian/NN/Fc as/IN 1/Z "/Fe rupture/NN and/CC new/JJ beginning/NN century/NN ./Fp

Thank you in advance for your help

Answer 1

grep -E -v '^======>match found:.+$' file.txt

-E turns on extended regular expressions, and -v negates the output, i.e. prints all lines that don't match.