removeSection method
Implementation
void removeSection(K sectionKey, {bool animate = true}) {
_checkNotDisposed();
_requireSection(sectionKey, "removeSection");
_tree.remove(key: SectionKey<K>(sectionKey), animate: animate);
}
void removeSection(K sectionKey, {bool animate = true}) {
_checkNotDisposed();
_requireSection(sectionKey, "removeSection");
_tree.remove(key: SectionKey<K>(sectionKey), animate: animate);
}