minor dead code: unused format string

Using URL base64 encoding
(without padding, i.e. with trailing '=' or '==')
hash string width is 256/6 = 43 characters.

file size virtually unchanged,
  out/soong/build.ninja:  7,188,669,041 => 7,186,999,370 ie 1.6M

Bug: N/A
Test: manually verified (e.g. ran `m nothing` successfully)
Change-Id: I166d613e1fd857555da9611d420d6691806571c7
diff --git a/android/bazel_handler.go b/android/bazel_handler.go
index 4d9423a..8ab003c 100644
--- a/android/bazel_handler.go
+++ b/android/bazel_handler.go
@@ -878,7 +878,7 @@
 		}
 
 		// The actual Bazel action.
-		cmd.Text(" " + buildStatement.Command)
+		cmd.Text(buildStatement.Command)
 
 		for _, outputPath := range buildStatement.OutputPaths {
 			cmd.ImplicitOutput(PathForBazelOut(ctx, outputPath))