remove unneeded clang dep

.SRCINFO

@@ -1,12 +1,11 @@
 pkgbase = ignition-physics
 	pkgdesc = Abstract physics interface designed to support simulation and rapid development of robot applications.
 	pkgver = 3.1.0
-	pkgrel = 4
+	pkgrel = 5
 	url = https://ignitionrobotics.org/libs/physics
 	arch = x86_64
 	license = Apache
 	makedepends = cmake
-	makedepends = clang
 	depends = ignition-cmake
 	depends = ignition-math
 	depends = ignition-plugin

PKGBUILD

@@ -2,7 +2,7 @@
 
 pkgname=ignition-physics
 pkgver=3.1.0
-pkgrel=4
+pkgrel=5
 pkgdesc="Abstract physics interface designed to support simulation and rapid
 development of robot applications."
 arch=('x86_64')
@@ -10,7 +10,7 @@ url="https://ignitionrobotics.org/libs/physics"
 license=('Apache')
 depends=('ignition-cmake' 'ignition-math' 'ignition-plugin' 'ignition-common'
          'libdart' 'sdformat')
-makedepends=('cmake' 'clang')
+makedepends=('cmake')
 source=("${pkgname}-${pkgver}.tar.gz::https://github.com/ignitionrobotics/ign-physics/archive/${pkgname}3_${pkgver}.tar.gz"
         "entity.patch::https://patch-diff.githubusercontent.com/raw/ignitionrobotics/ign-physics/pull/185.patch")
 sha256sums=('b8e5460d2808e20237b2ee0a6a6b7613b56412f5f6e2a5e153e48e8faae8ab77'