add mapping to clean search entry like we do in Linux shell: Ctrl-u

[voyeg3r]

Sometimes we start searching for a given string but we change our mind and erase that search and start typing something new, I already have this option or it would/should be added?

In the Linux shell, we type Ctrl-u and erase what we have typed and even can type Ctrl-y to paste what we have erased with Ctrl-u

[Conni2461]

Just unmap the current use of <c-u> (scrolling previewer up)

local actions = require('telescope.actions')
require('telescope').setup{
  defaults = {
    mappings = {
      i = {
        ["<c-u>"] = false
      },
    },
  }
}