remove JSON dependency

Author: borisdevos

Project.toml

@@ -7,15 +7,13 @@ version = "0.1.0"
 Artifacts = "56f22d72-fd6d-98f1-02f0-08ddc0907c33"
 BlockTensorKit = "5f87ffc2-9cf1-4a46-8172-465d160bd8cd"
 DelimitedFiles = "8bb1440f-4735-579b-a4ab-409b98df4dab"
-JSON3 = "0f8b85d8-7281-11e9-16c2-39a750bddbf1"
 TensorKit = "07d1fe3e-3e46-537d-9eac-e9e13d0d4cec"
 TensorKitSectors = "13a9c161-d5da-41f0-bcbd-e1a08ae0647f"
 TupleTools = "9d95972d-f1c8-5527-a6e0-b4b365fa01f6"
 
 [compat]
 Aqua = "0.8.9"
 Artifacts = "1.10, 1"
-JSON3 = "1.14.1"
 SafeTestsets = "0.1"
 TensorKitSectors = "0.1.4"
 Test = "1.10"

src/MultiTensorKit.jl

@@ -3,7 +3,6 @@ module MultiTensorKit
 export BimoduleSector, A4Object
 export leftoneunit, rightoneunit
 
-using JSON3
 using DelimitedFiles
 using Artifacts
 using TensorKitSectors