mesa: remove FEATURE_ES test in _mesa_is_compressed_format()

The code already has a runtime ES1 test.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

src/mesa/main/glformats.c

@@ -829,7 +829,6 @@ _mesa_is_compressed_format(struct gl_context *ctx, GLenum format)
    case GL_ETC1_RGB8_OES:
       return _mesa_is_gles(ctx)
          && ctx->Extensions.OES_compressed_ETC1_RGB8_texture;
-#if FEATURE_ES
    case GL_PALETTE4_RGB8_OES:
    case GL_PALETTE4_RGBA8_OES:
    case GL_PALETTE4_R5_G6_B5_OES:
@@ -841,7 +840,6 @@ _mesa_is_compressed_format(struct gl_context *ctx, GLenum format)
    case GL_PALETTE8_RGBA4_OES:
    case GL_PALETTE8_RGB5_A1_OES:
       return ctx->API == API_OPENGLES;
-#endif
    default:
       return GL_FALSE;
    }