[BugFix] Pylance emits the warnning 'Code is unreachable' #13673
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For the users who use vscode to write code, Pylance in vscode will shadow the code below the function calls
tvm.ir.load_json/save_json
and tell users "Code is unreachable" like the picture below:The issue maybe confuses users and make the code a little "dirty".
This PR fixes this by adding a return type hint to the functions
load_json
andsave_json
.