[confignet] Remove deprecated functions (open-telemetry#9363)

**Description:** 
Remove deprecated functions from confignet.

**Link to tracking Issue:** Closes open-telemetry#9105

.chloggen/confignet-remove-deprecated-functions.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: confignet
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Remove deprecated `DialContext` and `ListenContext` functions
+
+# One or more tracking issues or pull requests related to the change
+issues: [9363]
+
+# (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: [api]

config/confignet/confignet.go

@@ -45,18 +45,6 @@ func (na *NetAddr) Listen(ctx context.Context) (net.Listener, error) {
 	return lc.Listen(ctx, na.Transport, na.Endpoint)
 }
 
-// DialContext equivalent with net.Dialer's DialContext for this address.
-// Deprecated: [v0.93.0] use Dial instead.
-func (na *NetAddr) DialContext(ctx context.Context) (net.Conn, error) {
-	return na.Dial(ctx)
-}
-
-// ListenContext equivalent with net.ListenConfig's Listen for this address.
-// Deprecated: [v0.93.0] use Listen instead.
-func (na *NetAddr) ListenContext(ctx context.Context) (net.Listener, error) {
-	return na.Listen(ctx)
-}
-
 // TCPAddr represents a TCP endpoint address.
 type TCPAddr struct {
 	// Endpoint configures the address for this network connection.
@@ -81,15 +69,3 @@ func (na *TCPAddr) Listen(ctx context.Context) (net.Listener, error) {
 	lc := net.ListenConfig{}
 	return lc.Listen(ctx, "tcp", na.Endpoint)
 }
-
-// DialContext equivalent with net.Dialer's DialContext for this address.
-// Deprecated: [v0.93.0] use Dial instead.
-func (na *TCPAddr) DialContext(ctx context.Context) (net.Conn, error) {
-	return na.Dial(ctx)
-}
-
-// ListenContext equivalent with net.ListenConfig's Listen for this address.
-// Deprecated: [v0.93.0] use Listen instead.
-func (na *TCPAddr) ListenContext(ctx context.Context) (net.Listener, error) {
-	return na.Listen(ctx)
-}