Remove modifier from semantic token types since VS Code doesn't support it. (#1635)

Author: dbaeumer

client/src/common/semanticTokens.ts

@@ -68,7 +68,6 @@ export class SemanticTokensFeature extends TextDocumentLanguageFeature<boolean |
     		SemanticTokenTypes.method,
     		SemanticTokenTypes.macro,
     		SemanticTokenTypes.keyword,
-    		SemanticTokenTypes.modifier,
     		SemanticTokenTypes.comment,
     		SemanticTokenTypes.string,
     		SemanticTokenTypes.number,