chore: reduce number of dependencies

@Kha Please try to avoid importing `Lean.Meta`, it is huge, and any
change there was forcing a bunch of files to be recompiled since
`Parser.Extension` depends on `Parenthesizer`

src/Lean/PrettyPrinter/Formatter.lean

@@ -14,7 +14,7 @@ emitting a token, we already know the text following it and can decide whether o
 necessary.
 -/
 import Lean.Parser
-import Lean.Meta
+import Lean.Meta.ReduceEval
 import Lean.Elab.Quotation
 
 namespace Lean

src/Lean/PrettyPrinter/Parenthesizer.lean

@@ -70,7 +70,9 @@ node).
 
 -/
 
-import Lean.Meta
+import Lean.Util.ReplaceExpr
+import Lean.Meta.Basic
+import Lean.Meta.WHNF
 import Lean.KeyedDeclsAttribute
 import Lean.Parser.Basic
 import Lean.ParserCompiler