[wpimath] Remove PathWeaver support

[Gold856]

Closes #7812.

[calcmogul]

Looks like there's more to remove.

[tav@myriad allwpilib]$ rg TrajectoryUtil
wpimath/CMakeLists.txt
17:    src/main/native/cpp/jni/TrajectoryUtilJNI.cpp

wpimath/src/test/native/cpp/trajectory/TrajectoryJsonTest.cpp
8:#include "frc/trajectory/TrajectoryUtil.h"
18:  EXPECT_NO_THROW(deserialized = TrajectoryUtil::DeserializeTrajectory(
19:                      TrajectoryUtil::SerializeTrajectory(trajectory)));

wpimath/src/test/java/edu/wpi/first/math/jni/TrajectoryUtilJNITest.java
11:public class TrajectoryUtilJNITest {
14:    assertDoesNotThrow(TrajectoryUtilJNI::forceLoad);

wpimath/src/test/java/edu/wpi/first/math/trajectory/TrajectoryJsonTest.java
25:                TrajectoryUtil.deserializeTrajectory(
26:                    TrajectoryUtil.serializeTrajectory(trajectory)));

wpimath/src/main/java/edu/wpi/first/math/jni/TrajectoryUtilJNI.java
9:/** TrajectoryUtil JNI. */
10:public final class TrajectoryUtilJNI extends WPIMathJNI {
46:  private TrajectoryUtilJNI() {}

wpimath/src/main/native/include/frc/trajectory/TrajectoryUtil.h
18:class WPILIB_DLLEXPORT TrajectoryUtil {
20:  TrajectoryUtil() = delete;

wpimath/src/main/native/cpp/jni/TrajectoryUtilJNI.cpp
13:#include "edu_wpi_first_math_jni_TrajectoryUtilJNI.h"
14:#include "frc/trajectory/TrajectoryUtil.h"
61: * Class:     edu_wpi_first_math_jni_TrajectoryUtilJNI
66:Java_edu_wpi_first_math_jni_TrajectoryUtilJNI_fromPathweaverJson
71:        frc::TrajectoryUtil::FromPathweaverJson(JStringRef{env, path}.c_str());
81: * Class:     edu_wpi_first_math_jni_TrajectoryUtilJNI
86:Java_edu_wpi_first_math_jni_TrajectoryUtilJNI_toPathweaverJson
92:    frc::TrajectoryUtil::ToPathweaverJson(trajectory,
100: * Class:     edu_wpi_first_math_jni_TrajectoryUtilJNI
105:Java_edu_wpi_first_math_jni_TrajectoryUtilJNI_deserializeTrajectory
109:    auto trajectory = frc::TrajectoryUtil::DeserializeTrajectory(
120: * Class:     edu_wpi_first_math_jni_TrajectoryUtilJNI
125:Java_edu_wpi_first_math_jni_TrajectoryUtilJNI_serializeTrajectory
132:                       frc::TrajectoryUtil::SerializeTrajectory(trajectory));

wpimath/src/main/native/cpp/jni/Exceptions.cpp
23:     "TrajectoryUtil$TrajectorySerializationException",

wpimath/src/main/java/edu/wpi/first/math/trajectory/TrajectoryUtil.java
11:import edu.wpi.first.math.jni.TrajectoryUtilJNI;
18:public final class TrajectoryUtil {
19:  private TrajectoryUtil() {
85:    return createTrajectoryFromElements(TrajectoryUtilJNI.fromPathweaverJson(path.toString()));
96:    TrajectoryUtilJNI.toPathweaverJson(getElementsFromTrajectory(trajectory), path.toString());
107:    return createTrajectoryFromElements(TrajectoryUtilJNI.deserializeTrajectory(json));
118:    return TrajectoryUtilJNI.serializeTrajectory(getElementsFromTrajectory(trajectory));

wpimath/src/main/native/cpp/trajectory/TrajectoryUtil.cpp
5:#include "frc/trajectory/TrajectoryUtil.h"
17:void TrajectoryUtil::ToPathweaverJson(const Trajectory& trajectory,
31:Trajectory TrajectoryUtil::FromPathweaverJson(std::string_view path) {
46:std::string TrajectoryUtil::SerializeTrajectory(const Trajectory& trajectory) {
51:Trajectory TrajectoryUtil::DeserializeTrajectory(std::string_view jsonStr) {