[SYCL][Bindless][Exp] Remove unneeded function argument causing memory leak in image create functions

[DBDuncan]

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Remove pi_mem argument from piextMemUnsampledImageCreate, piextMemSampledImageCreate and the corresponding UR functions. The argument is not used for any useful functionality and causes a memory leak.

[DBDuncan]

Corresponding UR PR: https://github.com/oneapi-src/unified-runtime/pull/1512

[kbenzie]

https://github.com/intel/llvm/pull/13503 which fixes the ASAN test failures here have now been merged, pull in the latest sycl branch changes to get the check passing.

[kbenzie]

@intel/llvm-gatekeepers please merge

[sarnex]

We aren't merging any PRs today because the CI is in a bad state, we will merge this on Monday.

[DBDuncan]

@sarnex Is CI in a better state now?

[aelovikov-intel]

@sarnex Is CI in a better state now?

Let's see :)