branches.md: Remove duplicate entry for kbara-next
branches.md: Remove duplicate entry for kbara-next

I should have caught this in merge commit 309f881 but didn't.

mixflowtech/logsensor,heryii/snabb,Igalia/snabbswitch,eugeneia/snabbswitch,Igalia/snabb,dpino/snabbswitch,eugeneia/snabb,alexandergall/snabbswitch,mixflowtech/logsensor,dpino/snabb,Igalia/snabbswitch,snabbco/snabb,dpino/snabbswitch,eugeneia/snabbswitch,dpino/snabb,dpino/snabb,Igalia/snabb,snabbco/snabb,eugeneia/snabb,snabbco/snabb,wingo/snabbswitch,snabbco/snabb,eugeneia/snabb,alexandergall/snabbswitch,kbara/snabb,wingo/snabb,alexandergall/snabbswitch,SnabbCo/snabbswitch,kbara/snabb,heryii/snabb,Igalia/snabbswitch,Igalia/snabbswitch,SnabbCo/snabbswitch,SnabbCo/snabbswitch,kbara/snabb,alexandergall/snabbswitch,eugeneia/snabb,wingo/snabb,kbara/snabb,heryii/snabb,Igalia/snabb,snabbco/snabb,Igalia/snabb,wingo/snabb,kbara/snabb,wingo/snabbswitch,Igalia/snabb,heryii/snabb,Igalia/snabb,dpino/snabb,dpino/snabb,eugeneia/snabbswitch,eugeneia/snabb,snabbco/snabb,wingo/snabb,eugeneia/snabb,alexandergall/snabbswitch,mixflowtech/logsensor,heryii/snabb,snabbco/snabb,dpino/snabbswitch,alexandergall/snabbswitch,Igalia/snabb,dpino/snabb,mixflowtech/logsensor,wingo/snabbswitch,heryii/snabb,alexandergall/snabbswitch,kbara/snabb,dpino/snabbswitch,wingo/snabb,wingo/snabb,snabbco/snabb,alexandergall/snabbswitch,wingo/snabbswitch,mixflowtech/logsensor,eugeneia/snabbswitch,SnabbCo/snabbswitch,Igalia/snabbswitch,Igalia/snabb,eugeneia/snabb,eugeneia/snabb,dpino/snabb