libcamera: ipa_manager: Verify IPA module signature

Decide whether to isolate the IPA module using the module signature
instead of its license.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>

src/libcamera/include/ipa_module.h

@@ -37,8 +37,6 @@ public:
 	bool match(PipelineHandler *pipe,
 		   uint32_t minVersion, uint32_t maxVersion) const;
 
-	bool isOpenSource() const;
-
 private:
 	struct IPAModuleInfo info_;
 	std::vector<uint8_t> signature_;