Remove context sensitive let indentation when IndentPolicyLeft

Let expressions with multiple bindings automattically indent and pull
left

```
let
  a = b
  c = d
in foo bar baz
```

```
let
  a = b
  c = d
in
  foo bar baz
```

```
let
  a = b
  c = d
in foo
  bar
  baz
```

```
let
  a = b
  c = d
in
  foo
    bar
    baz
```

src/Language/Haskell/Brittany/Internal/Layouters/Expr.hs

@@ -567,7 +567,44 @@ layoutExpr lexpr@(L _ expr) = do
               (docSetBaseY $ expDoc1)
             ]
           ]
-        Just bindDocs@(_:_) -> docAlt
+        Just bindDocs@(_:_) -> docAlt $
+          case indentPolicy of
+            IndentPolicyLeft ->
+              --either
+              --  let
+              --    a = b
+              --    c = d
+              --  in foo
+              --    bar
+              --    baz
+              --or
+              --  let
+              --    a = b
+              --    c = d
+              --  in
+              --    fooooooooooooooooooo
+              [ docLines
+                [ docAddBaseY BrIndentRegular
+                $ docPar
+                  (docLit $ Text.pack "let")
+                  (docSetBaseAndIndent $ docLines $ return <$> bindDocs)
+                , docSeq
+                  [ docLit $ Text.pack "in "
+                  , docAddBaseY BrIndentRegular $ expDoc1
+                  ]
+                ]
+              , docLines
+                [ docAddBaseY BrIndentRegular
+                $ docPar
+                  (docLit $ Text.pack "let")
+                  (docSetBaseAndIndent $ docLines $ return <$> bindDocs)
+                , docAddBaseY BrIndentRegular
+                $ docPar
+                  (docLit $ Text.pack "in")
+                  (docSetBaseY $ expDoc1)
+                ]
+              ]
+            _ ->
               [ docLines
                 [ docSeq
                   [ appSep $ docLit $ Text.pack "let"