Revert "Now removes deprecation warning properly"

This reverts commit db02a50.

Author: danieljbruce

src/query.ts

@@ -218,9 +218,6 @@ class Query {
       this.newFilters.push(propertyOrFilter);
       return this;
     } else {
-      process.emitWarning(
-        'Providing Filter objects is recommended when using .filter'
-      );
       let operator = operatorOrValue as Operator;
       if (arguments.length === 2) {
         value = operatorOrValue as {};

test/entity.ts

@@ -770,12 +770,10 @@ describe('entity', () => {
         "' property is outside of bounds of a JavaScript Number.\n" +
         "Use 'Datastore.int(<integer_value_as_string>)' to preserve accuracy during the upload.";
 
-      const onWarning = (warning: {message: unknown}) => {
+      process.on('warning', warning => {
         assert.strictEqual(warning.message, expectedWarning);
-        process.removeListener('warning', onWarning);
         done();
-      };
-      process.on('warning', onWarning);
+      });
       entity.encodeValue(largeIntValue, property);
     });