How to delete a particular entry from a database.

[monstrup]

Hey all.
Im working on a code where I have a text file

Output:
ARFCN: 1004, Freq:  931.0M, CID: 36231, LAC:  7713, MCC: 410, MNC:   4, Pwr: -35
ARFCN: 1008, Freq:  931.8M, CID: 47103, LAC:  7713, MCC: 410, MNC:   4, Pwr: -48
ARFCN:    6, Freq:  936.2M, CID: 10096, LAC: 10470, MCC: 410, MNC:   1, Pwr: -28
ARFCN:   10, Freq:  937.0M, CID: 30911, LAC: 10470, MCC: 410, MNC:   1, Pwr: -39
ARFCN:   49, Freq:  944.8M, CID: 15535, LAC: 52207, MCC: 410, MNC:   3, Pwr: -28
ARFCN:   66, Freq:  948.2M, CID: 10001, LAC:   470, MCC: 410, MNC:   6, Pwr: -39
ARFCN:  100, Freq:  955.0M, CID:   667, LAC:  1007, MCC: 410, MNC:   3, Pwr: -30

I have another text file containing a larger number of registered towers. When I compare the above given data with the database text file using the following code:

#! /bin/sh
clear
echo "                      */\*/\*/\*/\*/\*/\*/\*/\*/\*/\*/\*/\* "
echo "                      D A T A B A S E  C O M P A R I S O N  "
echo "                      *\/*\/*\/*\/*\/*\/*\/*\/*\/*\/*\/*\/* "
echo UNIQUE BTS TOWERS ARE


gawk 'BEGIN{FS=OFS=", "} NR==FNR{Database[$1 $2 $3 $4 $5 $6]; next}
        $1~/ARFCN: / && !($1 $2 $3 $4 $5 $6 in Database)' Database.txt 		alpha.txt | tee beta.txt

echo "These BTS are not available in the database. "
notify-send "SCANNED!"
echo DONE!

I get the alleged fake tower in a new text file called beta.txt. In order to perform further tests, I need to compare certain parameters with the original alpha.txt file.

My question, basically, is to seek guidance as to how I can remove the entry stored in beta.txt from the file alpha.txt. In other words, I want to automatically create a new file having data of alpha.txt minus the data in beta.txt.
Im sorry if my question is crude or very basic. But I am new to python and would greatly appreciate any guidance
Regards.