Remove ApiWrapper from sql-database-projects (#11345)

* Remove ApiWrapper

* fix compile error

* Use .resolves

* Check error messages

* Check for not called

* FIx global beforeEach/afterEach

extensions/sql-database-projects/package.json

@@ -315,10 +315,12 @@
     "xmldom": "^0.3.0"
   },
   "devDependencies": {
+    "@types/sinon": "^9.0.4",
     "@types/xmldom": "^0.1.29",
     "mocha-junit-reporter": "^1.17.0",
     "mocha-multi-reporters": "^1.1.7",
     "should": "^13.2.1",
+    "sinon": "^9.0.2",
     "tslint": "^5.8.0",
     "typemoq": "^2.1.0",
     "typescript": "^2.6.1",