Use non-arrayed varying name for TCS blocks

This is a partial revert of CL 2625 to restore naming the
value member of the BLOCK_INOUT interface block as
"BLOCK_INOUT.value" rather than "BLOCK_INOUT[0].value".

Affects:

KHR-GL46.tessellation_shader.single.xfb_captures_data_from_correct_stage

Components: OpenGL

VK-GL-CTS issue: 1388

Change-Id: I9ef6453ec5465a0fa5561220cc9d7bfe54298416

external/openglcts/modules/glesext/tessellation_shader/esextcTessellationShaderXFB.cpp

@@ -297,7 +297,6 @@ void TessellationShaderXFB::initTest()
 	/* Create a fragment shader program */
 	glw::GLint		   link_status			= GL_FALSE;
 	const glw::GLchar* varying_name			= "BLOCK_INOUT.value";
-	const glw::GLchar* varying_array_name	= "BLOCK_INOUT[0].value";
 
 	m_fs_program_id = createSeparableProgram(GL_FRAGMENT_SHADER, 1, /* n_strings */
 											 &fs_body, 0,			/* n_varyings */
@@ -404,7 +403,7 @@ void TessellationShaderXFB::initTest()
 	/* Create a tessellation control shader program */
 	m_tc_program_id = createSeparableProgram(m_glExtTokens.TESS_CONTROL_SHADER, 1, /* n_strings */
 											 &tc_body, 1,						   /* n_varyings */
-											 &varying_array_name,				   /* varyings */
+											 &varying_name,						   /* varyings */
 											 tc_feedback_valid);				   /* should_succeed */
 
 	if (!tc_feedback_valid)