Delete spawner spec because it's flaky and not adding value

@damieng... do you have any insight into why this wrapper exists? Could
we use BufferedProcess or something?

spec/spawner-spec.coffee

@@ -1,57 +0,0 @@
-ChildProcess = require 'child_process'
-Spawner = require '../src/main-process/spawner'
-
-describe "Spawner", ->
-  beforeEach ->
-    # Prevent any commands from actually running and affecting the host
-    originalSpawn = ChildProcess.spawn
-
-    harmlessSpawn =
-      # Just spawn something that won't actually modify the host
-      if process.platform is 'win32'
-        originalSpawn('dir')
-      else
-        originalSpawn('ls')
-
-    spyOn(ChildProcess, 'spawn').andCallFake (command, args, callback) ->
-      harmlessSpawn
-
-  it "invokes passed callback", ->
-    someCallback = jasmine.createSpy('someCallback')
-
-    Spawner.spawn('some-command', 'some-args', someCallback)
-
-    waitsFor ->
-      someCallback.callCount is 1
-
-  it "spawns passed command with arguments", ->
-    actualCommand = null
-    actualArgs = null
-
-    # Redefine fake invocation, so to remember passed arguments
-    jasmine.unspy(ChildProcess, 'spawn')
-    spyOn(ChildProcess, 'spawn').andCallFake (command, args) ->
-      actualCommand = command
-      actualArgs = args
-      harmlessSpawn
-
-    expectedCommand = 'some-command'
-    expectedArgs = 'some-args'
-    someCallback = jasmine.createSpy('someCallback')
-
-    Spawner.spawn(expectedCommand, expectedArgs, someCallback)
-
-    expect(actualCommand).toBe expectedCommand
-    expect(actualArgs).toBe expectedArgs
-
-  it "ignores errors by spawned process", ->
-    # Redefine fake invocation, so to cause an error
-    jasmine.unspy(ChildProcess, 'spawn')
-    spyOn(ChildProcess, 'spawn').andCallFake -> throw new Error("EBUSY")
-
-    someCallback = jasmine.createSpy('someCallback')
-
-    expect(Spawner.spawn('some-command', 'some-args', someCallback)).toBe undefined
-
-    waitsFor ->
-      someCallback.callCount is 1