Remove unused imports

Author: Jaro Reinders

plugins/hls-cabal-plugin/src/Ide/Plugin/Cabal/Diagnostics.hs

@@ -13,8 +13,7 @@ where
 
 import           Control.Lens                      ((&), (.~))
 import qualified Data.Text                         as T
-import           Development.IDE                   (FileDiagnostic,
-                                                    ShowDiagnostic (ShowDiag))
+import           Development.IDE                   (FileDiagnostic)
 import           Development.IDE.Types.Diagnostics (fdLspDiagnosticL,
                                                     ideErrorWithSource)
 import           Distribution.Fields               (showPError, showPWarning)

plugins/hls-refactor-plugin/src/Development/IDE/Plugin/CodeAction.hs

@@ -88,7 +88,6 @@ import           Language.LSP.Protocol.Types                       (ApplyWorkspa
                                                                     CodeActionKind (CodeActionKind_QuickFix),
                                                                     CodeActionParams (CodeActionParams),
                                                                     Command,
-                                                                    Diagnostic (..),
                                                                     MessageType (..),
                                                                     Null (Null),
                                                                     ShowMessageParams (..),

plugins/hls-refactor-plugin/test/Main.hs

@@ -21,7 +21,6 @@ import           Data.Foldable
 import           Data.List.Extra
 import           Data.Maybe
 import qualified Data.Text                                as T
-import           Data.Tuple.Extra
 import           Development.IDE.GHC.Util
 import           Development.IDE.Plugin.Completions.Types (extendImportCommandId)
 import           Development.IDE.Test

plugins/hls-stan-plugin/src/Ide/Plugin/Stan.hs

@@ -14,7 +14,6 @@ import qualified Data.Text                         as T
 import           Development.IDE
 import           Development.IDE.Core.Rules        (getHieFile)
 import qualified Development.IDE.Core.Shake        as Shake
-import           Development.IDE.Types.Diagnostics
 import           GHC.Generics                      (Generic)
 import           Ide.Plugin.Config                 (PluginConfig (..))
 import           Ide.Types                         (PluginDescriptor (..),