[emulator] Remove stray blank line before namespace close in binaryninjaapi.h

Addresses review feedback (erroneous formatting) on PR #8314.

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

Author: xusheng6

binaryninjaapi.h

@@ -23354,7 +23354,6 @@ namespace BinaryNinja {
 		std::optional<DerivedString> RecognizeConstantData(
 			const HighLevelILInstruction& instr) override;
 	};
-
 }  // namespace BinaryNinja