Clean more legacy code (#3478)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

src/mbgl/programs/programs.cpp

@@ -1,38 +0,0 @@
-#include <mbgl/programs/programs.hpp>
-#include <mbgl/util/logging.hpp>
-#include <exception>
-
-namespace mbgl {
-
-Programs::Programs(const ProgramParameters& programParameters_)
-    : programParameters(programParameters_) {}
-
-Programs::~Programs() = default;
-
-/// @brief Register a list of types with a shader registry instance
-/// @tparam ...T Type list parameter pack
-/// @param registry A shader registry instance
-/// programParameters_ ProgramParameters used to initialize each instance
-template <typename... T>
-void registerTypes(gfx::ShaderRegistry& registry, const ProgramParameters& programParameters_) {
-    /// The following fold expression will create a shared_ptr for every type
-    /// in the parameter pack and register it with the shader registry.
-
-    /// Registration calls are wrapped in a lambda that throws on registration
-    /// failure, we shouldn't expect registration to faill unless the shader
-    /// registry instance provided already has conflicting programs present.
-    (
-        [](bool expr) {
-            if (!expr) {
-                throw std::runtime_error("Failed to register " + std::string(T::Name) + " with shader registry!");
-            }
-        }(registry.getLegacyGroup().registerShader(std::make_shared<T>(programParameters_))),
-        ...);
-}
-
-void Programs::registerWith(gfx::ShaderRegistry& registry) {
-    /// The following types will be registered
-    registerTypes<ClippingMaskProgram>(registry, programParameters);
-}
-
-} // namespace mbgl