Remove macro mutex as it's no longer needed

macro_tag.go

@@ -30,17 +30,13 @@ func (mt macroTag) Run(tc *TagContext, block, args []ast.Node) error {
 	}
 
 	if len(block) == 0 {
-		tc.t.macroMtx.Lock()
 		macro, ok := tc.t.macros[name]
 		if !ok {
 			return ErrNoSuchMacro
 		}
-		tc.t.macroMtx.Unlock()
 		return tc.Execute(macro, nil)
 	} else {
-		tc.t.macroMtx.Lock()
 		tc.t.macros[name] = block
-		tc.t.macroMtx.Unlock()
 	}
 
 	return nil

parse.go

@@ -26,7 +26,6 @@ import (
 	"path/filepath"
 	"reflect"
 	"strings"
-	"sync"
 
 	"go.elara.ws/salix/ast"
 	"go.elara.ws/salix/parser"
@@ -57,7 +56,6 @@ func (n *Namespace) ParseWithName(name string, r io.Reader) (Template, error) {
 		ast:  astVal.([]ast.Node),
 		tags: map[string]Tag{},
 		vars: map[string]reflect.Value{},
-		macroMtx: &sync.Mutex{},
 	}
 
 	performWhitespaceMutations(t.ast)

salix.go

@@ -62,8 +62,6 @@ type Template struct {
 
 	tags   map[string]Tag
 	vars   map[string]reflect.Value
-
-	macroMtx *sync.Mutex
 	macros map[string][]ast.Node
 }