[Collapse] Remove the height style property instead of setting it to zero, this fixes issues when having frequent window width changes.
[Collapse] Remove the height style property instead of setting it to zero, this fixes issues when having frequent window width changes.

tmorehouse/bootstrap-vue,sschadwick/bootstrap-vue,wheldring/bootstrap-vue-compiled,bootstrap-vue/bootstrap-vue,sschadwick/bootstrap-vue,wheldring/bootstrap-vue-compiled,tmorehouse/bootstrap-vue,sschadwick/bootstrap-vue,mosinve/bootstrap-vue,SirLamer/bootstrap-vue,mosinve/bootstrap-vue,wheldring/bootstrap-vue-compiled,SirLamer/bootstrap-vue,bootstrap-vue/bootstrap-vue