Fix packages not being removed after using the remove command

CHANGELOG.md

 # Change Log
 
+## [Unreleased]
+
+### Fixed
+
+- Fixed packages not being removed after using the `remove` command.
+
+
 ## [0.12.12] - 2019-04-11
 
 ### Fixed

poetry/installation/installer.py

@@ -209,7 +209,6 @@ class Installer:
 
             # Making a new repo containing the packages
             # newly resolved and the ones from the current lock file
-            locked_repository = self._locker.locked_repository(True)
             repo = Repository()
             for package in local_repo.packages + locked_repository.packages:
                 if not repo.has_package(package):

tests/installation/test_installer.py

@@ -75,6 +75,7 @@ class Locker(BaseLocker):
             package["python-versions"] = python_versions
 
         self._written_data = data
+        self._lock_data = data
 
 
 @pytest.fixture()
@@ -330,7 +331,7 @@ def test_run_whitelist_add(installer, locker, repo, package):
     assert locker.written_data == expected
 
 
-def test_run_whitelist_remove(installer, locker, repo, package):
+def test_run_whitelist_remove(installer, locker, repo, package, installed):
     locker.locked(True)
     locker.mock_lock_data(
         {
@@ -366,6 +367,7 @@ def test_run_whitelist_remove(installer, locker, repo, package):
     package_b = get_package("B", "1.1")
     repo.add_package(package_a)
     repo.add_package(package_b)
+    installed.add_package(package_b)
 
     package.add_dependency("A", "~1.0")
 
@@ -376,6 +378,9 @@ def test_run_whitelist_remove(installer, locker, repo, package):
     expected = fixture("remove")
 
     assert locker.written_data == expected
+    assert len(installer.installer.installs) == 1
+    assert len(installer.installer.updates) == 0
+    assert len(installer.installer.removals) == 1
 
 
 def test_add_with_sub_dependencies(installer, locker, repo, package):