revert 48fd477 to reduce vsix size

Change is no longer needed because vsce got fixed.

Author: gjsjohnmurray

.vscodeignore

@@ -1,16 +1,10 @@
-# Run 'vsce ls' to verify that the following lines exclude everything not needed
-# in the VSIX. It used to be possible to use a whitelisting technique here
-# but [email protected] broke it (see https://github.com/microsoft/vscode-vsce/issues/576)
-
-/*
-!/dist
-/dist/*.map
-!/images
-!/snippets
-!/syntaxes
+**
+!dist/
+!snippets/
+!images/
+!syntaxes/
 !CHANGELOG.md
-!language-configuration-class.jsonc
-!language-configuration.json
 !LICENSE
-!package.json
-!README.md
+!README.md
+!*.json
+!*.jsonc