[chore] remove deprecated types (#10283)

Signed-off-by: Alex Boten <[email protected]>

.chloggen/codeboten_rm-deprecated-request.yaml

@@ -0,0 +1,25 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: breaking
+
+# The name of the component, or a single word describing the area of concern, (e.g. otlpreceiver)
+component: exporterhelper
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: remove deprecated RequestMarshaler & RequestUnmarshaler types
+
+# One or more tracking issues or pull requests related to the change
+issues: [10283]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:
+
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: []

exporter/exporterhelper/request.go

@@ -32,16 +32,6 @@ type RequestErrorHandler interface {
 	OnError(error) Request
 }
 
-// RequestMarshaler is a function that can marshal a Request into bytes.
-//
-// Deprecated: [v0.94.0] Use exporterqueue.Marshaler[Request] instead.
-type RequestMarshaler func(req Request) ([]byte, error)
-
-// RequestUnmarshaler is a function that can unmarshal bytes into a Request.
-//
-// Deprecated: [v0.94.0] Use exporterqueue.Unmarshaler[Request] instead.
-type RequestUnmarshaler func(data []byte) (Request, error)
-
 // extractPartialRequest returns a new Request that may contain the items left to be sent
 // if only some items failed to process and can be retried. Otherwise, it returns the original Request.
 func extractPartialRequest(req Request, err error) Request {