NEW YORK — Bill de Blasio doesn’t want Mayor Eric Adams to turn the page on his signature pandemic policies just yet. As COVID-19 cases continue to tick up across the five boroughs, the former mayor urged his successor Friday to be ready to rapidly reimplement some of the public health restrictions he has scrapped since taking over the helm at City Hall. Careful not to directly knock Adams, de Blasio said he “won’t criticize” the mayor’s decision to rescind the Key2NYC indoor vaccine mandate and the public school face mask mandate earlier this year. “But I’d say this as a friendly reminder: Ke…