fix(filter-fields): remove font size
fix(filter-fields): remove font size

Font size overrides OSIO.
See: https://github.com/fabric8-ui/ngx-widgets/issues/73

dlabrecq/patternfly-ng,patternfly/patternfly-ng,dlabrecq/patternfly-ng,patternfly/patternfly-ng,dlabrecq/patternfly-ng,patternfly/patternfly-ng,dlabrecq/patternfly-ng,patternfly/patternfly-ng