fix: delete sqlite3

sqlite3 has no practical use and should be integrated into the orm

package.json

@@ -66,7 +66,6 @@
     "mocha": "^5.2.0",
     "nyc": "^15.1.0",
     "sinon": "^7.3.0",
-    "sqlite3": "^4.0.6",
     "supertest": "^3.3.0",
     "ts-node": "^8.1.0",
     "tslint": "^5.12.1",

yarn.lock

@@ -5551,14 +5551,6 @@ sprintf-js@~1.0.2:
   resolved "https://registry.yarnpkg.com/sprintf-js/-/sprintf-js-1.0.3.tgz#04e6926f662895354f3dd015203633b857297e2c"
   integrity sha512-D9cPgkvLlV3t3IzL0D0YLvGA9Ahk4PcvVwUbN0dSGr1aP0Nrt4AEnTUbuGvquEC0mA64Gqt1fzirlRs5ibXx8g==
 
-sqlite3@^4.0.6:
-  version "4.2.0"
-  resolved "https://registry.yarnpkg.com/sqlite3/-/sqlite3-4.2.0.tgz#49026d665e9fc4f922e56fb9711ba5b4c85c4901"
-  integrity sha512-roEOz41hxui2Q7uYnWsjMOTry6TcNUNmp8audCx18gF10P2NknwdpF+E+HKvz/F2NvPKGGBF4NGc+ZPQ+AABwg==
-  dependencies:
-    nan "^2.12.1"
-    node-pre-gyp "^0.11.0"
-
 stack-trace@0.0.x:
   version "0.0.10"
   resolved "https://registry.yarnpkg.com/stack-trace/-/stack-trace-0.0.10.tgz#547c70b347e8d32b4e108ea1a2a159e5fdde19c0"