remove json #438

Job	Run time
Create VSIX	3m 20s
Lint	3m 15s
Coverage (ubuntu-latest)	7m 38s
Check Python types	2m 20s
Tests (ubuntu-latest, 3.x, ts-unit)	3m 26s
Tests (ubuntu-latest, 3.x, python-unit)	3m 6s
Tests (ubuntu-latest, 3.x, venv)	3m 11s
Tests (ubuntu-latest, 3.x, single-workspace)	3m 4s
Tests (ubuntu-latest, 3.x, debugger)	2m 46s
Tests (ubuntu-latest, 3.x, functional)	2m 35s
Tests (windows-latest, 3.x, ts-unit)	5m 15s
Tests (windows-latest, 3.x, python-unit)	4m 16s
Tests (windows-latest, 3.x, venv)	4m 19s
Tests (windows-latest, 3.x, single-workspace)	6m 36s
Tests (windows-latest, 3.x, debugger)	6m 39s
Tests (windows-latest, 3.x, functional)	6m 28s
Smoke tests (ubuntu-latest)	2m 43s
Smoke tests (windows-latest)	6m 39s
	1h 17m 36s

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