Folder : AddOns\nUI\Layouts\Default\
File : nUI_Layout_Default_Dashboard.lua
Setting enabled = false will stop the bottom square containing location and clock info and quite possibly mouseover info. Whether or not it does what you want I don't know but worth trying. Hopefully it doesn't affect anything else that I haven't mentioned.
Code:
nUI_DefaultConfig.Location =
{
enabled = true;
anchor =
{
anchor_pt = "BOTTOM",
relative_to = "nUI_Dashboard",
relative_pt = "BOTTOM",
xOfs = 0,
yOfs = 8,
},
options =
{
enabled = true,
strata = nil,
level = 2,
height = 70,
width = 286,
fontsize = 12,
color = { r = 1, g = 0.83, b = 0 },
border =
{
backdrop =
{
bgFile = "Interface\\Tooltips\\UI-Tooltip-Background",
edgeFile = "Interface\\Tooltips\\UI-Tooltip-Border",
tile = true,
tileSize = 1,
edgeSize = 6,
insets = { left = 0, right = 0, top = 0, bottom = 0 },
},
color =
{
border = { r = 1, g = 1, b = 1, a = 1 },
backdrop = { r = 0, g = 0, b = 0, a = 0.75 },
},
},
},
};