OTTAWA -One of Sen. Lynn Beyak’s harshest critics, unsatisfied with the decision to kick her out of the Conservative caucus, wants Prime Minister Justin Trudeau to mount an effort to deal with her “fundamental unfitness’’ to serve in the upper chamber. New Democrat MP Charlie Angus has written to Trudeau to ask that he reach out to the independent and Liberal members of the Senate, among others, to convince them to “use the tools of the Senate’’ to have her removed, ending what he calls an “egregious abuse of public office.’’ Beyak was booted out of the Tory caucus late Thursday by Conservative Leader Andrew Scheer amid media reports about letters of support she had posted on her personal Senate website. The letters expressed support for Beyak after she triggered…