Remove unused dependencies.

[fredrikekre]

This drops the following from direct and indirect dependencies:

 - Compat v3.41.0
 - CompatHelper v3.1.0
 - ExprTools v0.1.8
 - GitForge v0.2.8
 - HTTP v0.9.17
 - IniFile v0.5.0
 - InlineStrings v1.1.2
 - IterativeSolvers v0.9.2
 - JSON2 v0.3.4
 - MbedTLS v1.0.3
 - Mocking v0.7.3
 - MultilineStrings v0.1.1
 - Parsers v2.2.1
 - RecipesBase v1.2.1
 - TimeZones v1.7.1
 - URIs v1.3.0
 - ArgTools
 - Base64
 - Dates
 - DelimitedFiles
 - Distributed
 - Downloads
 - InteractiveUtils
 - LazyArtifacts
 - LibCURL
 - LibGit2
 - Logging
 - Markdown
 - Mmap
 - NetworkOptions
 - Pkg
 - REPL
 - SharedArrays
 - Sockets
 - Statistics
 - TOML
 - Tar
 - Test
 - UUIDs
 - LibCURL_jll
 - LibSSH2_jll
 - MbedTLS_jll
 - MozillaCACerts_jll
 - Zlib_jll
 - nghttp2_jll
 - p7zip_jll