Remove unused variable.

Change-Id: I75d16ecb83dacdf95644b56841c841edaf7d93dd
diff --git a/modules/gles3/functional/es3fTextureMipmapTests.cpp b/modules/gles3/functional/es3fTextureMipmapTests.cpp
index 5aebbe6..143361f 100644
--- a/modules/gles3/functional/es3fTextureMipmapTests.cpp
+++ b/modules/gles3/functional/es3fTextureMipmapTests.cpp
@@ -992,11 +992,8 @@
 	tcu::TextureCube		resultTexture		(tcu::TextureFormat(tcu::TextureFormat::RGBA, tcu::TextureFormat::UNORM_INT8), m_size);
 
 	const int				numLevels			= deLog2Floor32(m_size)+1;
-	tcu::Sampler			sampler				= glu::mapGLSampler(wrapS, wrapT, minFilter, magFilter);
 	vector<float>			texCoord;
 
-	sampler.seamlessCubeMap = true;
-
 	// Initialize texture level 0 with colored grid.
 	for (int face = 0; face < tcu::CUBEFACE_LAST; face++)
 	{