Revert apparently unnecessary addition

src/compiler/checker.ts

@@ -2727,8 +2727,8 @@ namespace ts {
                 throw Debug.assertNever(name, "Unknown entity name kind.");
             }
             Debug.assert((getCheckFlags(symbol) & CheckFlags.Instantiated) === 0, "Should never get an instantiated symbol here.");
-            if (isIdentifier(name) && (symbol.flags & SymbolFlags.Alias || name.parent.kind === SyntaxKind.ExportAssignment)) {
-                markSymbolOfAliasDeclarationIfResolvesToTypeOnly(getAliasDeclarationFromName(name), symbol);
+            if (isIdentifier(name) && symbol.flags & SymbolFlags.Alias) {
+                markSymbolOfAliasDeclarationIfResolvesToTypeOnly(getTypeOnlyAliasDeclarationFromName(name), symbol);
             }
             return (symbol.flags & meaning) || dontResolveAlias ? symbol : resolveAlias(symbol);
         }

src/compiler/utilities.ts

@@ -2766,14 +2766,13 @@ namespace ts {
             node.kind === SyntaxKind.PropertyAssignment && isAliasableExpression((node as PropertyAssignment).initializer);
     }
 
-    export function getAliasDeclarationFromName(node: Identifier): Declaration | undefined {
+    export function getTypeOnlyAliasDeclarationFromName(node: Identifier): TypeOnlyCompatibleAliasDeclaration | undefined {
         switch (node.parent.kind) {
             case SyntaxKind.ImportClause:
             case SyntaxKind.ImportSpecifier:
             case SyntaxKind.NamespaceImport:
             case SyntaxKind.ExportSpecifier:
-            case SyntaxKind.ExportAssignment:
-                return node.parent as Declaration;
+                return node.parent as TypeOnlyCompatibleAliasDeclaration;
         }
     }