remove a now-pointless regtest

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84409 91177308-0d34-0410-b5e6-96231b3b80d8

test/Transforms/InstCombine/cast-malloc.ll

@@ -1,15 +0,0 @@
-; test that casted mallocs get converted to malloc of the right type
-; RUN: opt < %s -instcombine -S | \
-; RUN:    grep bitcast | count 1
-
-; The target datalayout is important for this test case. We have to tell 
-; instcombine that the ABI alignment for a long is 4-bytes, not 8, otherwise
-; it won't do the transform.
-target datalayout = "e-i64:32:64"
-
-define i32* @test(i32 %size) {
-        %X = malloc i64, i32 %size              ; <i64*> [#uses=1]
-        %ret = bitcast i64* %X to i32*          ; <i32*> [#uses=1]
-        ret i32* %ret
-}
-