chore: remove Makefile in favour of packaging/PKGBUILD

The PKGBUILD in packaging/ covers everything the Makefile did.
Local installs should use `cd packaging && makepkg -si` instead.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+    "makefile.configureOnOpen": false
+}

Makefile

@@ -1,23 +0,0 @@
-PREFIX ?= $(HOME)/.local
-BIN_DIR  = $(PREFIX)/bin
-APP_DIR  = $(PREFIX)/share/applications
-
-.PHONY: build install uninstall
-
-build:
-	cargo build --release
-
-install: build
-	install -Dm755 target/release/umutray $(BIN_DIR)/umutray
-	@mkdir -p $(APP_DIR)
-	@sed "s|Exec=umutray|Exec=$(BIN_DIR)/umutray|" umutray.desktop > $(APP_DIR)/umutray.desktop
-	@echo ""
-	@echo "Installed umutray to $(BIN_DIR)/umutray"
-	@echo "App menu entry written to $(APP_DIR)/umutray.desktop"
-	@echo ""
-	@echo "Optional: run 'umutray service install' to autostart the tray on login."
-
-uninstall:
-	rm -f $(BIN_DIR)/umutray
-	rm -f $(APP_DIR)/umutray.desktop
-	@echo "Uninstalled umutray"