Remove libOpenCL.so from search list in favor of libOpenCL.so.1

Author: mcourteaux

src/runtime/opencl.cpp

@@ -37,7 +37,6 @@ extern "C" WEAK void *halide_opencl_get_symbol(void *user_context, const char *n
 #ifdef WINDOWS
         "opencl.dll",
 #else
-        "libOpenCL.so",
         "libOpenCL.so.1",
         "/System/Library/Frameworks/OpenCL.framework/OpenCL",
 #endif