Remove ganache-core / misc cleanup

package.json

@@ -21,7 +21,6 @@
   "dependencies": {
     "death": "^1.1.0",
     "ganache-cli": "^6.5.0",
-    "ganache-core": "^2.6.0",
     "istanbul": "^0.4.5",
     "req-cwd": "^1.0.1",
     "sha1": "^1.1.1",

test/units/assert.js

@@ -1,10 +1,8 @@
 const assert = require('assert');
 const util = require('./../util/util.js');
 
-const ganache = require('ganache-core');
+const ganache = require('ganache-cli');
 const Coverage = require('./../../lib/coverage');
-const DataCollector = require('./../../lib/collector');
-const nodeUtil = require('util');
 
 describe('asserts and requires', () => {
   let coverage;

test/units/function.js

@@ -1,7 +1,7 @@
 const assert = require('assert');
 const util = require('./../util/util.js');
 
-const ganache = require('ganache-core');
+const ganache = require('ganache-cli');
 const Coverage = require('./../../lib/coverage');
 
 describe('function declarations', () => {

test/units/if.js

@@ -1,9 +1,8 @@
 const assert = require('assert');
 const util = require('./../util/util.js');
 
-const ganache = require('ganache-core');
+const ganache = require('ganache-cli');
 const Coverage = require('./../../lib/coverage');
-const DataCollector = require('./../../lib/collector');
 
 describe('if, else, and else if statements', () => {
   let coverage;

test/units/loops.js

@@ -1,9 +1,8 @@
 const assert = require('assert');
 const util = require('./../util/util.js');
 
-const ganache = require('ganache-core');
+const ganache = require('ganache-cli');
 const Coverage = require('./../../lib/coverage');
-const DataCollector = require('./../../lib/collector');
 
 describe('for and while statements', () => {
   let coverage;

test/units/statements.js

@@ -1,7 +1,7 @@
 const assert = require('assert');
 const util = require('./../util/util.js');
 
-const ganache = require('ganache-core');
+const ganache = require('ganache-cli');
 const Coverage = require('./../../lib/coverage');
 
 describe('generic statements', () => {