Kernel: Remove unnecessary printf specifier

Author: https://github.com/supercomputer7
Commit: 2f2016f51d
Pull-request: https://github.com/SerenityOS/serenity/pull/1513
Issue: https://github.com/SerenityOS/serenity/issues/1351
Reviewed-by: https://github.com/bugaevc

Kernel/FileSystem/DiskBackedFileSystem.cpp

@@ -150,7 +150,7 @@ bool DiskBackedFS::write_block(unsigned index, const u8* data, FileDescription*
 bool DiskBackedFS::write_blocks(unsigned index, unsigned count, const u8* data, FileDescription* description)
 {
 #ifdef DBFS_DEBUG
-    klog() << "DiskBackedFileSystem::write_blocks " << index << " x%u" << count;
+    klog() << "DiskBackedFileSystem::write_blocks " << index << " x" << count;
 #endif
     for (unsigned i = 0; i < count; ++i)
         write_block(index + i, data + i * block_size(), description);