add warning from issue yarnpkg#2495

fix comments of Deniel15

remove spaces

fix spaces

Drop `diff`. (yarnpkg#2592)

Remove empty lines

Replace `user-home` with `os.homedir`. (yarnpkg#2635)

* Replace `user-home` with `os.homedir`.

* Replace `os.homedir` with `user-home-dir`.

* Fix use `require('user-home-dir').default`.

add space that were removed

marge with master

src/reporters/lang/en.js

@@ -34,7 +34,6 @@ const messages = {
 
   verboseFileCopy: 'Copying $0 to $1.',
   verboseFileLink: 'Creating hardlink at $0 to $1.',
-  verboseFileLink: 'Creating hardlink at $0 to $1.',
   verboseFileSymlink: 'Creating symlink at $0 to $1.',
   verboseFileSkip: 'Skipping copying of file $0 as the file at $1 is the same size ($2) and mtime ($3).',
   verboseFileSkipSymlink: 'Skipping copying of $0 as the file at $1 is the same symlink ($2).',
@@ -251,7 +250,7 @@ const messages = {
   packageInstalledWithBinaries: 'Installed $0 with binaries:',
   packageHasBinaries: '$0 has binaries:',
   packageHasNoBinaries: '$0 has no binaries',
-  
+
   couldBeDeduped: '$0 could be deduped from $1 to $2',
   lockfileNotContainPatter: 'Lockfile does not contain pattern: $0',
   integrityHashesDontMatch: 'Integrity hashes don\'t match, expected $0 but got $1',
@@ -260,13 +259,7 @@ const messages = {
   optionalDepNotInstalled: 'Optional dependency $0 not installed',
   packageWrongVersion: '$0 is wrong version: expected $1, got $2',
   packageDontSatisfy: '$0 doesn\'t satisfy found match of $1',
-
-  lockfileExists: 'Lockfile already exists, not importing.',
-  skippingImport: 'Skipping import of $0 for $1',
-  importFailed: 'Import of $0 for $1 failed, resolving normally.',
-  importResolveFailed: 'Import of $0 failed starting in $1',
-  importResolvedRangeMatch: 'Using version $0 of $1 instead of $2 for $3',
-  verboseFileSkipHardlink: 'Skipping copying of $0 as the file at $1 is the same hardlink ($2).',
+
   lockfileExists: 'Lockfile already exists, not importing.',
   skippingImport: 'Skipping import of $0 for $1',
   importFailed: 'Import of $0 for $1 failed, resolving normally.',