Nope... All is there to stay...

As Jim said, you can't remove the "All" option in the page field. With
programming, you could select another item if the user selects "All".

For example, the following code is stored on the worksheet's code module:
    Right-click the sheet tab, and choose View Code
    Paste the code where the cursor is flashing.

'========================
Private Sub Worksheet_Change(ByVal Target As Range)
Dim pt As PivotTable
Dim pf As PivotField
Dim i As Long
Set pt = Me.PivotTables(1)
Set pf = pt.PivotFields("Employee")

With pf
    If .CurrentPage = "(All)" Then
        i = 1
        For i = 1 To pf.PivotItems.Count + 1
        On Error Resume Next
            .CurrentPage = .PivotItems(i).Name
            If Err.Number = 0 Then
                Exit For
            End If
        Next i
        MsgBox "The (All) option is not available"
    End If
End With

End Sub
'============================