remove IfElse.jl dependency (#2255)

Author: JoshuaLampert

Project.toml

@@ -16,7 +16,6 @@ EllipsisNotation = "da5c29d0-fa7d-589e-88eb-ea29b0a81949"
 FillArrays = "1a297f60-69ca-5386-bcde-b61e274b549b"
 ForwardDiff = "f6369f11-7733-5829-9624-2563aa707210"
 HDF5 = "f67ccb44-e63f-5c2f-98bd-6dc0ccc4ba2f"
-IfElse = "615f187c-cbe4-4ef1-ba3b-2fcf58d6d173"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
 LinearMaps = "7a12625a-238d-50fd-b39a-03d52299707e"
 LoopVectorization = "bdcacae8-1622-11e9-2a5c-532679323890"
@@ -78,7 +77,6 @@ EllipsisNotation = "1.0"
 FillArrays = "1.9"
 ForwardDiff = "0.10.24"
 HDF5 = "0.16.10, 0.17"
-IfElse = "0.1"
 LinearAlgebra = "1"
 LinearMaps = "2.7, 3.0"
 LoopVectorization = "0.12.151"

src/Trixi.jl

@@ -50,7 +50,6 @@ using DiffEqCallbacks: PeriodicCallback, PeriodicCallbackAffect
 using FillArrays: Ones, Zeros
 using ForwardDiff: ForwardDiff
 using HDF5: HDF5, h5open, attributes, create_dataset, datatype, dataspace
-using IfElse: ifelse
 using LinearMaps: LinearMap
 using LoopVectorization: LoopVectorization, @turbo, indices
 using StaticArrayInterface: static_length # used by LoopVectorization