Remove release note for #7704 in 2.16, as it's in 2.15.2
Remove release note for #7704 in 2.16, as it's in 2.15.2

thenewguy/wagtail,zerolab/wagtail,rsalmaso/wagtail,wagtail/wagtail,rsalmaso/wagtail,mixxorz/wagtail,thenewguy/wagtail,thenewguy/wagtail,mixxorz/wagtail,wagtail/wagtail,jnns/wagtail,rsalmaso/wagtail,mixxorz/wagtail,jnns/wagtail,wagtail/wagtail,zerolab/wagtail,jnns/wagtail,zerolab/wagtail,wagtail/wagtail,jnns/wagtail,thenewguy/wagtail,mixxorz/wagtail,rsalmaso/wagtail,zerolab/wagtail,mixxorz/wagtail,thenewguy/wagtail,zerolab/wagtail,rsalmaso/wagtail,wagtail/wagtail