style: drop stray blank lines left by the test-file splits

The `sed`-based extractions in the preceding three split commits each
left one extra blank line at the cut boundary, which `cargo fmt --all
--check` (a CI gate) rejects. Whitespace only — no code change.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

crates/ely_app/src/shell/gpui_harness_tests_b.rs

@@ -316,4 +316,3 @@ async fn baseline_overlay_under_root_with_track_focus_receives_click(cx: &mut Te
          around its widget tree."
     );
 }
-

crates/ely_app/src/shell/web_surface_live_site_tests.rs

@@ -464,7 +464,6 @@ fn wait_for_ready_frame_at_css_size(
     }
 }
 
-
 #[path = "web_surface_live_site_support.rs"]
 mod web_surface_live_site_support;
 use web_surface_live_site_support::*;

crates/ely_browser_core/tests/splits.rs

@@ -263,4 +263,3 @@ fn detach_split_pane_refreshes_saved_split_title() -> Result<(), Box<dyn Error>>
     assert_eq!(layout.pane_count(), 2);
     Ok(())
 }
-