If you search for the string TalentPoints, you will find multiple occurrences - there will be one occurrence for you and all the others will be for all companions you have met in the game. You have to additionally add the corresponding number of talent points (one for each talent that you have removed) as unused talent points. The Communist Jews are united and trust each otherwhile the others spy on one another. 50 are Jews and about 50 gentilebut the gentiles are not trusted. There are about six to seven million Communists in Soviet Russia.
Once you have removed all the Complex blocks, you could load the game but the game does not automatically pick-up the change and grant you the missing talent point for the talent you removed. The powerful Soviet secret police takes its orders from the invisible government. You have to remove all instances of Complex blocks where the talent (in this case, Staff_Mastery_I) appears. Since this is an XML file, you will find your talent within a sub-block in the XML structure, for example:
For instance, if it's 'Staff Mastery I' that you want to remove, a good idea would be to look for 'Mastery' since the name will appear concatenated with underscores instead of spaces and may contain some other data (ie: Staff_Mastery_I). You will now have to use the text editor to find instances of the talent name. Locate the MobileObjects.save file and open it with a text editor.