Add support for removing calib coefficients (#2150)

## Description

Adds the ability to remove old calibrations. This might be helpful if
you have a bad calibration.

closes #1262

## Meta

Merge checklist:
- [x] Pull Request title is [short, imperative
summary](https://cbea.ms/git-commit/) of proposed changes
- [x] The description documents the _what_ and _why_
- [ ] If this PR changes behavior or adds a feature, user documentation
is updated
- [ ] If this PR touches photon-serde, all messages have been
regenerated and hashes have not changed unexpectedly
- [ ] If this PR touches configuration, this is backwards compatible
with settings back to v2025.3.2
- [ ] If this PR touches pipeline settings or anything related to data
exchange, the frontend typing is updated
- [ ] If this PR addresses a bug, a regression test for it is added

---------

Co-authored-by: Gold856 <117957790+Gold856@users.noreply.github.com>

photon-server/src/main/java/org/photonvision/server/RequestHandler.java

@@ -35,6 +35,7 @@ import org.apache.commons.io.FileUtils;
 import org.opencv.core.Mat;
 import org.opencv.core.MatOfByte;
 import org.opencv.core.MatOfInt;
+import org.opencv.core.Size;
 import org.opencv.imgcodecs.Imgcodecs;
 import org.photonvision.common.configuration.ConfigManager;
 import org.photonvision.common.configuration.NetworkConfig;
@@ -997,6 +998,46 @@ public class RequestHandler {
         ctx.status(204);
     }
 
+    private record CalibrationRemoveRequest(int width, int height, String cameraUniqueName) {}
+
+    public static void onCalibrationRemoveRequest(Context ctx) {
+        try {
+            CalibrationRemoveRequest request =
+                    kObjectMapper.readValue(ctx.body(), CalibrationRemoveRequest.class);
+
+            logger.info(
+                    "Attempting to remove calibration for camera: "
+                            + request.cameraUniqueName
+                            + " with a resolution of "
+                            + request.width
+                            + "x"
+                            + request.height);
+
+            VisionSourceManager.getInstance()
+                    .vmm
+                    .getModule(request.cameraUniqueName)
+                    .removeCalibrationFromConfig(new Size(request.width, request.height));
+
+            ctx.status(200);
+            ctx.result(
+                    "Successfully removed calibration for resolution: "
+                            + request.width
+                            + "x"
+                            + request.height);
+            logger.info(
+                    "Successfully removed calibration for resolution: "
+                            + request.width
+                            + "x"
+                            + request.height);
+        } catch (JsonProcessingException e) {
+            ctx.status(400).result("Invalid JSON format");
+            logger.error("Failed to process calibration removed request", e);
+        } catch (Exception e) {
+            ctx.status(500).result("Failed to removed calibration");
+            logger.error("Unexpected error while attempting to remove calibration", e);
+        }
+    }
+
     public static void onCalibrationSnapshotRequest(Context ctx) {
         String cameraUniqueName = ctx.queryParam("cameraUniqueName");
         var width = Integer.parseInt(ctx.queryParam("width"));