glsl: Drop resize-to-MaxPatchVertices hack.

TCS and TES inputs without an array size are implicitly sized to
gl_MaxPatchVertices.  But TCS outputs are apparently not:

   "If no size is specified, it will be taken from the output patch size
    (gl_VerticesOut) declared in the shader."

Fixes dEQP-GLES31.functional.program_interface_query.program_output.
array_size.separable_tess_ctrl.var.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>

src/compiler/glsl/ir.h

@@ -843,12 +843,6 @@ public:
 
       unsigned implicit_sized_array:1;
 
-      /**
-       * Is this a non-patch TCS output / TES input array that was implicitly
-       * sized to gl_MaxPatchVertices?
-       */
-      unsigned tess_varying_implicit_sized_array:1;
-
       /**
        * Whether this is a fragment shader output implicitly initialized with
        * the previous contents of the specified render target at the