Implement remove imported package

package/src/imports/directory.rs

@@ -46,4 +46,20 @@ impl ImportsDirectory {
 
         Ok(())
     }
+
+    /// Removes an imported package in the imports directory at the provided path.
+    pub fn remove_import(path: &PathBuf, package_name: &str) -> Result<(), ImportsDirectoryError> {
+        let mut path = path.to_owned();
+        if path.is_dir() && !path.ends_with(IMPORTS_DIRECTORY_NAME) {
+            path.push(PathBuf::from(IMPORTS_DIRECTORY_NAME));
+        }
+
+        path.push(PathBuf::from(package_name));
+
+        if path.is_dir() && path.exists() {
+            fs::remove_dir_all(&path).map_err(ImportsDirectoryError::Removing)?;
+        }
+
+        Ok(())
+    }
 }

package/src/lib.rs

@@ -36,4 +36,9 @@ impl LeoPackage {
     pub fn initialize(package_name: &str, is_lib: bool, path: &PathBuf) -> Result<(), PackageError> {
         package::Package::initialize(package_name, is_lib, path)
     }
+
+    /// Removes an imported Leo package
+    pub fn remove_imported_package(package_name: &str, path: &PathBuf) -> Result<(), PackageError> {
+        package::Package::remove_imported_package(package_name, path)
+    }
 }

package/src/package.rs

@@ -1,5 +1,22 @@
+// Copyright (C) 2019-2020 Aleo Systems Inc.
+// This file is part of the Leo library.
+
+// The Leo library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// The Leo library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::{
     errors::PackageError,
+    imports::ImportsDirectory,
     inputs::{InputFile, InputsDirectory, StateFile},
     root::{Gitignore, Manifest, README},
     source::{LibraryFile, MainFile, SourceDirectory},
@@ -167,7 +184,7 @@ impl Package {
     }
 
     /// Removes the package at the given path
-    pub fn remove_package(_package_name: &str) -> Result<(), PackageError> {
+    pub fn remove_imported_package(package_name: &str, path: &PathBuf) -> Result<(), PackageError> {
-        unimplemented!()
+        Ok(ImportsDirectory::remove_import(path, package_name)?)
     }
 }