disp: msm: remove gem functions without callsites

Many upstream files and APIs have been removed in downstream
driver. Some function definintions are left dangling without
any caller. Remove the functions which are not used downstream.

Change-Id: I9f936e7cdac3be6f854b3c67725164fad785f0d4
Signed-off-by: Steve Cohen <quic_cohens@quicinc.com>

msm/msm_mmu.h

@@ -72,17 +72,9 @@ static inline void msm_mmu_init(struct msm_mmu *mmu, struct device *dev,
 	mmu->funcs = funcs;
 }
 
-struct msm_mmu *msm_iommu_new(struct device *dev, struct iommu_domain *domain);
 struct msm_mmu *msm_smmu_new(struct device *dev,
 	enum msm_mmu_domain_type domain);
 
-static inline void msm_mmu_set_fault_handler(struct msm_mmu *mmu, void *arg,
-		int (*handler)(void *arg, unsigned long iova, int flags))
-{
-	mmu->arg = arg;
-	mmu->handler = handler;
-}
-
 /* SDE smmu driver initialize and cleanup functions */
 int __init msm_smmu_driver_init(void);
 void __exit msm_smmu_driver_cleanup(void);