How to remove carriage return and line feed from bank payment format.

I have tried the below 4 but nothing is working. The bank payment file is always printing a CR LF at the end

v_chr_l_sec:= regexp_replace(v_chr_z_rec,'([^[:graph:]||^[:blank:]])',''); /*Remove CR LF*/
              v_chr_l_sec:= regexp_replace(v_chr_z_rec,chr(13)||chr(10),'');
              v_chr_l_sec:= regexp_replace(v_chr_z_rec,chr(13),'');
              v_chr_l_sec:= regexp_replace(v_chr_z_rec,chr(10),'');