Remove deprecated functionality

Project.toml

@@ -13,7 +13,6 @@ Logging = "56ddb016-857b-54e1-b83d-db4d58db5568"
 Observables = "510215fc-4207-5dde-b226-833fc4488ee2"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
-Requires = "ae029012-a4dd-5104-9daa-d747884805df"
 Sockets = "6462fe0b-24de-5631-8697-dd941f90decc"
 UUIDs = "cf7118a7-6976-5b1a-9a39-7adc72f591a4"
 Widgets = "cc8bc4a8-27d6-5769-a93b-9d913e69aa62"
@@ -35,7 +34,6 @@ IJulia = "1.13"
 JSON = "0.18, 0.19, 0.20, 0.21"
 Mux = "1"
 Observables = "0.5"
-Requires = "0.4.4, 0.5, 1.0.0"
 WebSockets = "1.5.0, 1.6.0"
 Widgets = "0.6.2"
 julia = "1.10"

src/WebIO.jl

@@ -1,7 +1,6 @@
 module WebIO
 
 using Observables
-using Requires
 using AssetRegistry
 using Base64: stringmime
 import Widgets
@@ -49,8 +48,6 @@ include("rpc.jl")
 
 # Extra "non-core" functionality
 include("devsetup.jl")
-include("../deps/jupyter.jl")
-
 
 """
     setup_provider(s::Union{Symbol, AbstractString})
@@ -88,12 +85,6 @@ function setup(provider::Symbol)
 end
 setup(provider::AbstractString) = setup(Symbol(provider))
 
-function prefetch_provider_file(basename)
-  filepath = joinpath(@__DIR__, "..", "ext", basename)
-  code = read(filepath, String)
-  (file = filepath, code = code)
-end
-
 struct WebIOServer{S}
     server::S
     serve_task::Task

src/devsetup.jl

@@ -1,7 +1,3 @@
-function devsetup()
-    Base.depwarn("WebIO.devsetup() is no longer required. You can simply run WebIO.bundlejs().", :webio_devesetup)
-end
-
 function bundlejs()
     include(joinpath(@__DIR__, "..", "deps", "_bundlejs.jl"))
 end