You can turn off the animations by going to Setup Slide Show and underShow Options tick the Show without animation option and clickOK. Now run the show and it will display without the animations.

If you really want to delete all the animations in a single sweep then you will need to run this macro.

Sub StripAllBuilds()

    Dim I As Integer: Dim J As Integer    Dim oActivePres As Object    Set oActivePres = ActivePresentation    With oActivePres        For I = 1 To .Slides.Count            If Val(Application.Version) < 10 Then                ' Older versions of PowerPoint 97/2000

                ' In each slide set the animation property

                ' of the Shape object to FALSE                For J = 1 To .Slides(I).Shapes.Count                    .Slides(I).Shapes(J).AnimationSettings.Animate = msoFalse                Next J            Else              ' New versions support the Timeline object                For J = .Slides(I).TimeLine.MainSequence.Count To 1 Step -1                    .Slides(I).TimeLine.MainSequence(J).Delete                Next J            End If        Next I    End With    Set oActivePres = NothingEnd Sub