Revert "meson: add wrap for libdrm"

This reverts commit 6217eedc9bac86856d5048c43b5f5a3f6976c13e.

I was using this for testing and accidentally put it on master

Signed-off-by: Dylan Baker <dylan.c.baker@intel.com>
diff --git a/meson.build b/meson.build
index 70b93a9..a4dfa62 100644
--- a/meson.build
+++ b/meson.build
@@ -1066,10 +1066,7 @@
   if d[1]
     set_variable(
       'dep_libdrm_' + d[0],
-      dependency(
-        'libdrm_' + d[0], version : '>=' + _drm_ver,
-        fallback : ['libdrm', 'ext_libdrm_' + d[0]]
-      )
+      dependency('libdrm_' + d[0], version : '>=' + _drm_ver)
     )
   endif
 endforeach
@@ -1077,8 +1074,7 @@
 with_gallium_drisw_kms = false
 dep_libdrm = dependency(
   'libdrm', version : '>=' + _drm_ver,
-  required : with_dri2 or with_dri3,
-  fallback : ['libdrm', 'ext_libdrm']
+  required : with_dri2 or with_dri3
 )
 if dep_libdrm.found()
   pre_args += '-DHAVE_LIBDRM'