Remove binder from transpileDeclaration implementation.

src/compiler/_namespaces/ts.ts

@@ -57,7 +57,6 @@ export * from "../transformers/module/system";
 export * from "../transformers/module/esnextAnd2015";
 export * from "../transformers/module/node";
 export * from "../transformers/declarations/diagnostics";
-export * from "../transformers/declarations/emitBinder";
 export * from "../transformers/declarations/emitResolver";
 export * from "../transformers/declarations/transpileDeclaration";
 export * from "../transformers/declarations/localInferenceResolver";

src/compiler/debug.ts

@@ -356,15 +356,6 @@ export namespace Debug {
         }
     }
 
-    /**
-     * Asserts the symbol is defined and is of the right kind (originating in TSC or sample DTE depending o the test that is currently being run)
-     * The default implementation just asserts the symbol is not null
-     * In tests it is overridden to ensure we don't accidentally use TSC symbols in DTE
-     */
-    // eslint-disable-next-line prefer-const
-    export let assertSymbolValid = (symbol: Symbol) => {
-        assert(symbol, "Symbol not defined");
-    };
     /**
      * Asserts a value has the specified type in typespace only (does not perform a runtime assertion).
      * This is useful in cases where we switch on `node.kind` and can be reasonably sure the type is accurate, and