PEL: Removed unused includes

The clangd LSP indicates when includes aren't used directly.

Tested:
Unit tests pass.

Change-Id: I8290fe59abd1cef4fada27aeb5adb2c45c289abb
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
diff --git a/extensions/openpower-pels/pel_entry.cpp b/extensions/openpower-pels/pel_entry.cpp
index 89e9dd0..ded741f 100644
--- a/extensions/openpower-pels/pel_entry.cpp
+++ b/extensions/openpower-pels/pel_entry.cpp
@@ -1,5 +1,8 @@
 #include "pel_entry.hpp"
 
+#include "pel_types.hpp"
+#include "repository.hpp"
+
 #include <xyz/openbmc_project/Common/error.hpp>
 
 namespace openpower