remove unused file

corsika/detail/modules/TrackingLine.inl

-/*
- * (c) Copyright 2020 CORSIKA Project, corsika-project@lists.kit.edu
- *
- * This software is distributed under the terms of the GNU General Public
- * Licence version 3 (GPL Version 3). See file LICENSE for a full version of
- * the license.
- */
-
-#pragma once
-
-#include <corsika/framework/geometry/Point.hpp>
-#include <corsika/framework/geometry/QuantityVector.hpp>
-#include <corsika/framework/geometry/Sphere.hpp>
-#include <corsika/framework/geometry/Vector.hpp>
-#include <corsika/media/Environment.hpp>
-
-#include <limits>
-#include <stdexcept>
-#include <utility>
-
-namespace corsika::tracking_line {
-
-  inline std::optional<std::pair<TimeType, TimeType>> TimeOfIntersection(
-      corsika::Line const& line, corsika::Sphere const& sphere) {
-    auto const delta = line.getStartPoint() - sphere.getCenter();
-    auto const v = line.getVelocity();
-    auto const vSqNorm =
-        v.getSquaredNorm(); // todo: get rid of this by having V0 normalized always
-    auto const R = sphere.getRadius();
-
-    auto const vDotDelta = v.dot(delta);
-    auto const discriminant =
-        vDotDelta * vDotDelta - vSqNorm * (delta.getSquaredNorm() - R * R);
-
-    if (discriminant.magnitude() > 0) {
-      auto const sqDisc = sqrt(discriminant);
-      auto const invDenom = 1 / vSqNorm;
-      return std::make_pair((-vDotDelta - sqDisc) * invDenom,
-                            (-vDotDelta + sqDisc) * invDenom);
-    } else {
-      return {};
-    }
-  }
-
-  inline TimeType getTimeOfIntersection(Line const& vLine, Plane const& vPlane) {
-
-    auto const delta = vPlane.getCenter() - vLine.getStartPoint();
-    auto const v = vLine.getVelocity();
-    auto const n = vPlane.getNormal();
-    auto const c = n.dot(v);
-
-    if (c.magnitude() == 0) {
-      return std::numeric_limits<TimeType::value_type>::infinity() * 1_s;
-    } else {
-      return n.dot(delta) / c;
-    }
-  }
-
-} // namespace corsika::tracking_line