Trim some docstrings that don't add value

Author: johnslavik

Lib/_pyrepl/reader.py

@@ -157,13 +157,7 @@ def make_default_commands() -> dict[CommandName, CommandClass]:
 
 @dataclass(frozen=True, slots=True)
 class RefreshInvalidation:
-    """Which parts of the screen need to be recomputed on the next refresh.
-
-    Typing a character sets ``buffer_from_pos`` (rebuild from that offset).
-    Moving the cursor without editing sets ``cursor_only``.
-    Resizing the terminal sets ``layout`` (reflow all lines).
-    Opening a completion menu sets ``overlay``.
-    """
+    """Which parts of the screen need to be recomputed on the next refresh."""
 
     cursor_only: bool = False
     buffer_from_pos: int | None = None
@@ -316,12 +310,7 @@ class Reader:
     ## cached metadata to speed up screen refreshes
     @dataclass
     class RefreshCache:
-        """Previously computed render/layout data for incremental refresh.
-
-        Stores the output of the last ``calc_screen`` so that the next
-        refresh can reuse unchanged rows (e.g. only re-render from the
-        edited line onward instead of the whole screen).
-        """
+        """Previously computed render/layout data for incremental refresh."""
 
         render_lines: list[RenderLine] = field(default_factory=list)
         layout_rows: list[LayoutRow] = field(default_factory=list)