PHP remove the first index of an array and re-index

I have an array like Array

(
    [0] => A
    [2] => B
    [4] => C
    [6] => D
)

I want to remove the first element and then re-index array to get the output

(
    [0] => B
    [1] => C
    [2] => D
)

Which PHP function i need to use?

Update

Input array is

Array
(
    [0] => Array
        (
            [0] => Some Unwanted text
            [1] => You crazyy
        )

    [2] => Array
        (
            [0] => My belowed text
            [1] => You crazyy
        )

    [10] => Array
        (
            [0] => My loved quote
            [1] => You crazyy
        )

)

And the output should be like

Array
(
    [0] => Array
        (
            [0] => My belowed text
            [1] => You crazyy
        )

    [1] => Array
        (
            [0] => My loved quote
            [1] => You crazyy
        )

)