remove confusing phrase from 3D D3D10 and D3D11 texture errors

Because D3D10 and D3D11 textures cannot be multisampled, there is
no need to list this case as a possible error condition.

Author: bashbaug

api/opencl_runtime_layer.asciidoc

@@ -4878,7 +4878,7 @@ returned in _errcode_ret_:
     _subresource_ is not a valid subresource index for _resource_.
   * {CL_INVALID_D3D10_RESOURCE_KHR} if _resource_ is not a Direct3D 10
     texture resource, if _resource_ was created with the D3D10_USAGE flag
-    D3D10_USAGE_IMMUTABLE, if _resource_ is a multisampled texture, if a
+    D3D10_USAGE_IMMUTABLE, if a
     {cl_mem_TYPE} from subresource _subresource_ of _resource_ has already
     been created using {clCreateFromD3D10Texture3DKHR}, or if _context_ was
     not created against the same Direct3D 10 device from which _resource_
@@ -5010,7 +5010,7 @@ returned in _errcode_ret_:
     _subresource_ is not a valid subresource index for _resource_.
   * {CL_INVALID_D3D11_RESOURCE_KHR} if _resource_ is not a Direct3D 11
     texture resource, if _resource_ was created with the D3D11_USAGE flag
-    D3D11_USAGE_IMMUTABLE, if _resource_ is a multisampled texture, if a
+    D3D11_USAGE_IMMUTABLE, if a
     {cl_mem_TYPE} from subresource _subresource_ of _resource_ has already
     been created using {clCreateFromD3D11Texture3DKHR}, or if _context_ was
     not created against the same Direct3D 11 device from which _resource_